The special opens with Ben and Grandpa Max sitting at a campsite, miserably roasting marshmallows. We learn they are not from our typical dimension, and that in this dimension, Gwen decided to attend summer school instead of accompanying them on their road trip. All of a sudden, a portal opens behind them and a being, who we later learn is called Alien X, arrives and attacks them, prompting Ben to transform into Cannonbolt. Alien X easily overpowers both Cannonbolt and Max; he forcibly removes the Omnitrix from Ben's arm and fuses it to his chest. After he leaves, an alternate Max Tennyson, Maximilian, arrives and repairs the damages, and informs Ben that his Omnitrix is unfortunately gone forever. Maximilian leaves their dimension on his ship, the Rustbucket. He records a captain's log of his recent mission to stop Alien X, expressing frustration as to why he always arrives one step too late. He decides to pull up his map of the multiverse and find an untouched dimension to get to first before Alien X. After he selects one, "our" dimension, his ship gets attacked by Phase Parasites in the dimensional hyperspace. Maximilian is forced to activate his ship's self-destruct sequence and make his final warp to that dimension.
Meanwhile, in that dimension, Ben is fighting Zombozo as Shock Rock on the roof of the Rustbucket, being driven by a hypnotized Max. As the fight goes on, a tied-up Gwen manages to free herself and she and Max put a stop to Zombozo, much to Ben's annoyance. Once they return to their road trip, Max and Gwen eagerly talk about what stops to see next, while Ben is unenthused. He says he might need a break, which Gwen eventually figures out means that he doesn't want to be a hero with the two of them anymore, and fly solo instead. Ben wishes he could show off his aliens' true potential, and thinks he can't when people are getting in his way trying to help. Their conversation is cut short when Alien X appears in front of the road, flipping the Rustbucket over by simply letting it hit his outstretched hand. As Max and the kids recover, Alien X advances toward them. Ben transforms into Four Arms and tries to fight him, but struggles against Alien X's telekinesis. The Omnitrix times out and recharges immediately, and Ben transforms into Heatblast. Alien X dodges all of Heatblast's fire with teleportation. The watch times out and recharges again, and Ben transforms into Humungousaur, whose attacks Alien X blocks; though he manages to knock him back once. As he is thrown against the Rustbucket and times out, Ben tries stalling. Gwen and Max decide to help Ben, whether he wants it or not, and bait Alien X to the front of the road, where an incoming truck is driving at full speed. It runs into him, though Alien X easily destroys it.
The Tennysons flee to an abandoned factory and catch their breath. Ben argues with Gwen that he was going to defeat Alien X if she and Max had not gotten in his way. All of a sudden, a green portal flashes and out comes Maximilian. Gwen assumes he is from the future, but he corrects it to "alternate dimension". Ben impatiently transforms into Diamondhead, but Maximilian explains to him that they are all part of a larger "Omniverse" that Alien X is storming through, wanting nothing less than the collection of every Omnitrix from every Ben Tennyson. He reveals that he also failed at keeping his own Ben safe from him. We are shown Maximilian's Dimension at the time of Alien X's arrival; his Ben refused to warp, gallantly running off to fight Alien X, later being defeated and killed. Now, Maximillian won't allow himself to fail again, and plans to make a final stand to permanently stop Alien X in our Ben's dimension. He and Diamondhead clash; the latter not wanting to be used as bait; and the former angry that Ben doesn't understand the importance of his safety. Alien X interrupts them and uppercuts Diamondhead to the second floor, where he times out. Maximilian gives Ben an opportunity to run away; Alien X locks him, Max, and Gwen behind a door.
Ben runs away in fear until the Omnitrix recharges, turning into Rath and fighting Alien X outside in a forest; however Alien X's teleportation, telekinesis, and other skills prove to be too powerful and Rath loses hard. Ben times out and Alien X grabs him by his arm. Just as he prepares to take the Omnitrix, Maximilian interrupts and shoots Alien X with a blast from his arm cannon, the feedback accidentally making the Omnitrix detach; dropping Ben out of Alien X's grip, but allowing Alien X to fuse the watch to his chest and leave through a portal. Ben is devastated. Maximilian surmises this dimension's Omnitrix has a failsafe release and tells the Ben to be grateful he still lives. Gwen tries to come up with a plan to get it back, such as finding a dimension where Ben hasn't yet found the Omnitrix, but Max tells them that without his ship, they're stuck. Suddenly, another portal opens and out steps what Maximillian identifies as a Crystalsapien. It introduces itself as Chromastone, before reverting into a teenage version of Ben from a different dimension. He, like Maximilian, has been tracking Alien X through the dimensions and also frustrates over getting to him too late. However, he also has the assistance of an intergalactic law enforcement agency known as the Plumbers (something Max is surprisingly aware of); and that with his portal generator, he has no transportation problems. Maximilian offers to join this Ben (aka Alien Force Ben), and Gwen suggest that since he still has an Omnitrix, they can use him to lure Alien X back to this dimension. Maximillian believes the plan will never work because of Ben being a stubborn brat, which offends Max. Ben breaks up all the arguing when he agrees with Gwen's plan, believing two Bens can stand a chance against Alien X.
While Maximilian searches for another Omnitrix using the portal generator, the others set a trap for Alien X. Ben picks the location: his favorite (though currently abandoned) amusement park Adrenaland. The Tennysons and Chromastone build their trap using attractions throughout the park. After they are done, Gwen pressures Alien Force Ben to tell her about his dimension's version of her. He tells her that she grows taller, loves magic books, and has a crush on Kevin, which disgusts her. When Alien X eventually arrives in search of Alien Force Ben's Omnitrix, Ben transforms into an alien named Big Chill and orders the other Tennysons to activate the trap. However, the trap fails, Big Chill is defeated, and Alien X decides to rethink his prior mercy and take Ben's life. Before he does, Maximilian returns with another Ben from another dimension. This one looks indistinguishable to the other teenage Ben, but has a different watch. Ordering Maximilian to take Ben to safety, he (Ultimate Alien Ben) turns into an alien named Ampfibian, teaming up with Alien Force Ben as Chromastone to take on Alien X. As Gwen and Ben watch, she makes him realize they need to expand their family even more. Ben abruptly takes the portal generator from Maximilian and pulls him through a portal to find more Bens; Gwen understands because the only person who Ben will listen to is himself. Alien X lifts up an entire Ferris wheel and almost flattens the rest of them, but Chromastone stops it and Maximilian and Ben return with reinforcements.
The reinforcements are two new alternate Ben 10s (Original Series Ben and Omniverse Ben), as well as a Gwen 10. They all transform into their own aliens and try to take shots at Alien X, but he manages them all. As Alien Force Ben admits that they are not winning, Alien X lifts up a giant rock and throws it at them, forcing them inside a cave and blocking the entrance. They all sulk over not being able to put a dent in Alien X. Ben realizes that they all have the same problem: they're too hard-headed and try to take on Alien X one at a time. In order to win, they have to synchronize their powers and work together, as a team and as a family. They all put their hands together and yell "It's Hero Time!". Maximilian gives Gwen and Max some weapons to join in the fight, while all the alternate Bens (and Gwen) transform. With a newfound attitude, Team Tennyson busts out of the cave entrance and makes their stand against Alien X. They fight against him, protecting their teammates when in danger and pressuring Alien X to focus on defending against attacks from all directions. Eventually Gwen 10, as Ripjaws, pulls Ben's Omnitrix out of Alien X's chest, and Ben finally takes it back. He turns into Heatblast and teams up with Original Series Ben, also as Heatblast. The team regroups and attacks Alien X, pulling off as many Omnitrixes as they can before he pushes them away. Eventually, he is left with only one Omnitrix left, and he stands off against Ben, as Four Arms. The two run at each other, and Four Arms triumphs in the clash with his "Quadruple-Decker Knuckle Sandwich", finally defeating Alien X.
Alien X laments that he was "so close", to which Ben says he never stood a chance because he was trying to do it all on his own. Alien X then detransforms, revealing he was also an alternate version of Ben this entire time. "Evil Ben" confesses that he doesn't belong to any of their dimensions, and that after an encounter with his version of Vilgax that got his version of Max and Gwen killed, he decided that his family was wrong in trying to help him. He would have proved that going it alone is the only way to succeed, by travelling across the omniverse to ensure every other Ben feel the same pain that he did. Maximilian then tells him that he could always start over, if he had people willing to accept him as his new family, offering himself. Ben is appalled, but Maximilian explains that while this Ben needs to pay for his crimes, he isn't beyond help, and that the people who love Ben would offer him a second chance, were he in this Ben's shoes. Evil Ben says he'd rather go back to the Null Void, but Maximilian promises him that after his sentence, they'll both be spending some quality "grandfather/evil-grandson time". Maximilian opens an exit portal and thanks Team Tennyson for reminding him that everyone needs a family. All the alternate Bens and Gwen celebrate saving the omniverse and say goodbye as they exit. After everyone leaves, Max tells Gwen that they should probably give Ben some space, but Ben surprisingly hugs them and tells them to never leave him again, saying he'd rather be with them than ever consider riding solo. Max informs them that that means Team Tennyson is back on the road!
Noteworthy Events[]
Major Events[]
- Team Tennyson learns about the Omniverse and meets alternate versions of themselves.
- Alien X invades the Reboot Timeline and steals Ben's Omnitrix, though he manages to reclaim it with the help of his family and counterparts.
- Reboot Max is revealed to be a Plumber.
Character Debuts[]
- Maximilian Tennyson (first appearance)
- Maximillian's Dimension Ben (first appearance)
- Ben Prime
- Alien Force Ben (first appearance)
- Ultimate Alien Ben (first appearance)
- Omniverse Ben (first appearance)
- Original Series Ben (first appearance)
- Gwen 10 (first appearance)
- Dimension 12041.5 Ben (first appearance)
- Dimension 12041.5 Max (first appearance)
- Evil Ben Tennyson (first appearance)
- Evil Ben Dimension Vilgax (first appearance)
- Evil Ben Dimension Gwen Tennyson (first appearance)
- Evil Ben Dimension Max Tennyson (first appearance)
Alien Debuts[]
- Alien X (first appearance; by Evil Ben)
- Chromastone (first appearance; by Alien Force Ben)
- Big Chill (first appearance; by Alien Force Ben)
- Ampfibian (first appearance; by Ultimate Alien Ben)
- Ripjaws (first appearance; by Gwen 10)
- Bloxx (first appearance; by Omniverse Ben)
Characters[]
Reboot Timeline Characters[]
- Ben Tennyson
- Gwen Tennyson
- Max Tennyson
Alternate Timeline Characters[]
- Maximilian Tennyson (first appearance)
- Ben Prime
- Alien Force Ben (first appearance)
- Ultimate Alien Ben (first appearance)
- Omniverse Ben (first appearance)
- Original Series Ben (first appearance)
- Gwen 10 (first appearance)
- Dimension 12041.5 Ben (first appearance)
- Dimension 12041.5 Max (first appearance)
Flashback Characters[]
- Alternate Ben (first appearance; death)
- Evil Ben Dimension Gwen (first appearance; death)
- Evil Ben Dimension Max (first appearance; death)
Villains[]
- Evil Ben Tennyson (first appearance)
- Zombozo
Flashback Villains[]
- Evil Ben Dimension Vilgax (first appearance; death)
Aliens Used[]
By Reboot Ben[]
- Shock Rock
- Four Arms (x2)
- Heatblast (x2)
- Humungousaur (selected alien was XLR8)
- Diamondhead
- Rath
By Evil Ben[]
- Alien X (first appearance; flashback and present)
- Four Arms (flashback)
By Alien Force Ben[]
- Chromastone (first appearance; x4)
- Big Chill (first appearance; x2)
By Ultimate Alien Ben[]
- Ampfibian (first appearance; x4)
By Omniverse Ben[]
- Bloxx (first appearance; x2)
By Original Series Ben[]
- Heatblast (x2)
By Gwen 10[]
- Ripjaws (first appearance; x2)
By Dimension 12041.5 Ben[]
- Cannonbolt
By Alternate Ben (Maximilian's Dimension)[]
- Four Arms (flashback)
Intro Aliens[]
- XLR8 (cameo)
- Slapback (cameo)
- Cannonbolt (cameo; by Reboot Ben)
- Jetray (cameo)
Quotes[]
| Gwen: Who?
Max: What? Ben: Whoa! Another Diamondhead! Maximus: State your business Crystalsapien. Chromastone: Call me Chromastone! And I mean you no harm, Max. Uh, Maxes. Max: How do you know who I - who we are? Chromastone: Bet you've never been this alien before, huh? (Ben shakes his head no before Chromastone reverts back into human) Alien Force Ben: Don't worry. You'll grow into him. Probably. Ben: Are you, me? (Alien Force Ben nods his head) Gwen: No way! Ben: Obviously way. No let him, I mean me, I mean him, speak! Alien Force Ben: So how long have you had your Omnitrix, other dimension me? (Ben looks down at his wrist) Oh, guess I'm too late. He's been here already. Maximus: You know Alien X? Alien Force Ben: That's not what we call him. Maximus: We? Alien Force Ben: The Plumbers! Hello? (A worried Max motions to stop talking about the Plumbers.) |
| Dimension 12041.5 Ben: Who... who are you?
Alien X: I am your fate. Dimension 12041.5 Ben: Wait, Wait, no! (Alien X hits him and steals his watch.) Alien X: I leave you with your life. Consider it a gift. |
| Alien X: Foolish Tennyson.
Ben: Hey! Who are you calling foolish? Seriously, which one there's a bunch of Tennysons right now. Alien X: EVERY LAST ONE OF YOU! |
| Maximus: Captain's log. (Sigh) Maximillian Tennyson. Interdimensional coordinates: 12041.5. (Sighs) Another dimensional Ben was attacked today. Lost another Omnitrix to the entity Alien X. But at least this Ben survived. You think I'd be use to it all by now but... (Looks at picture of him, Ben, and Gwen on summer vacation 6 years ago) Anyway, this isn't about revenge anymore. Not when there's still Bens to save and Omnitrixes at stake. As for Alien X. Have to figure out why I'm always one step behind him. (Pulls up map of the multiverse). Find a dimension he hasn't hit yet. Get there before he does and wait for him. There. ID coordinates: 27998.3. |
| Max: Alright kids, we're back on the road. No more interruptions. Where to next?
Gwen: Ooh. We still haven't seen the world largest corncob. 50 feat tall. Max: Or, the worlds largest bowl of egg salad. Gwen: What about you Ben? Any sites you wanna see before summer's over? Ben: Yeah, a new sumo slammers high score on my tablet. Gwen: C'mon. Don't glue your nose to a screen. What about the pretzel hall of fame? C'mon Ben. You know you love pretzels. Ben: Eh, I think I'm over them. Gwen: Okay. what's bugging you? Ben: Maybe I just need a break. Gwen: We're already on break. Summer break. Ben: Well, maybe I need a break from my break. |
| Maximus: "Benjamin?"
Max: "He's not your Ben. Is he?" Evil Ben: "I'm no one's Ben. Unlike you fools. I learned that going in alone is the only way." |
| Humungousaur: Yeah yeah yeah, you got fancy pants powers. Should I care?
Alien X: You should. We are infinite. Humungousaur: Infinitely blasted. (Hits tail on ground creating a massive shockwave) Alien X: (Grunts). Impressive. Now it is our turn. Humungousaur: Our? |
| Maximus: (Falls through a portal and grunts)
Ben: What the Whattt?! Gwen: Another Grandpa?! Maximus: Sort of. Name's, Maximillion, but you can call me Maximus. Max: Nice to meet you Maximillian. You look familiar. The name's Max Tennyson. But you can just call me Grandpa! Maximus: Yeah I won't be doing that. Ben: Hello? This is all too weird. Even for us. Max: True, but clearly he has rugged good looks, cool gear, and naturally charisma. He looks like some sort of a- Gwen: -Future Max. Maximus: Alternate dimension, but close enough. You were always the smart one. Ben: Ugh. (Transforms into Diamondhead) Ugh. I don't have time for this. Maximus: Make time kid. The future of the Omniverse is at stake. Gwen: The Omniverse? Maximus: It's like all the existing universes rolled into one, and Alien X is storming his way across them. Diamondhead: Alien X? 'X' like mystery, or 'X' like the roman numeral for 10? (Everyone looks at Diamondhead) Diamondhead: What? I know things. Maximus: He's a mystery alright. scouring dimensions for one purpose - to collect every Omnitrix he can get his grubby hands on. I tried to keep my Benjamin safe, but I failed him. Diamondhead: Your Benjamin? Gwen: What happened. (Flashback) Maximus: We need to warp, he's too powerful. Alternate Ben: Quit worrying Max, I got this. Alternate Four Arms: (Struggles to defeat Alien X). Alternate Ben: (Ben times out and Alien X grabs his Omnitrix). Ahh! |
| Alien X: Your heroics are mildly more impressive then others, Ben Tennyson. But ultimately futile, as they will always be.
Max: Not on my watch monster. Maximus: Yeah, what I said. Alien X: You're too late, Max. Again. |
| Gwen: Ben!
Max: Did he hurt you? Ben: My watch! How? Maximus: A failsafe release. Not every dimension's Omnitrix has one. I've seen it before. Be grateful you're still here to miss it. Ben: Grateful, I lost everything! You got to help me get it back. Maximus: No I don't. Thanks to your hard head, Alien X is one step closer to his ultimate goal. |
| Alien Force Ben: Adrenaland?
Ben: It's Awesome! Please tell me you have them in your dimension!? Alien Force Ben: Yea-No. Ben: ....What a terrible terrible world. |