As Ben is running from an insectoid alien, his hand attempts to find Julie, but is caught by a dog instead. The dog's owners take the Omnitrix away and accidentally transforms him into Big Chill. Big Chill freezes the Vulpimancers that are chasing him, but they escape. He then transforms into Swampfire and forces them to retreat with fire blasts. However, the dog's owners are scared away by the blast.
Ben then transforms into Jetray to find Grandpa Max's old Null Void Camp. However, his Jetray hand grabs Julie's leg, causing her to freak out and whack the arm repeatedly.
This causes Jetray to transform back into Ben and fall towards jagged rocks. He is saved by a Null Guardian, who proceeds to slobber on his head. Julie sees the hand, and takes it to Gwen and Kevin. Sunder appears, but Gwen and Julie fight him off while Kevin tries to bring Ben back. Julie accidentally transforms Ben into Diamondhead, who brings down the bridge Ben is walking on. Ben makes it to The Camp, but finds it overrun by Havok Beasts. Kevin brings Ben back (without his left hand), but his hand is found by the Havok Beasts and they use the Omnitrix. Ben transforms into Brainstorm, Humungousaur, and Echo Echo to fight Sunder.
Ben's hand reappears while Sunder is sent to the Null Void, who then ends up fighting a large Havok Beast while the other Havok Beasts cheer.
Sunder: Where's the Omnitrix? Spidermonkey: Green watch thingy, hourglass symbol, turns you into all kinds of super powered aliens? Sunder: Yes! Spidermonkey: (in a sly voice) Never heard of it.
Kevin: (after telling Julie and Gwen his story on how he had his nose in another dimension for three hours, going to his car to remove alien tech, that could bring Ben back on the earth) Aren't you going to ask how I smelled? Gwen: Terrible, just like your joke.
Sunder: (after fighting with Sunder, Julie is suddenly held hostage)(to Gwen) Now, hand over the Omnitrix or I slice the girl in two. Julie: Wait, me? Gwen: Alright, you win, you can have the Omnitrix, just let her go! Sunder: The Omnitrix first... Kevin: (interrupting Gwen and Sunder's talk) How about the Omnitrix never?! (activates the machine, Julie is released, Ben comes back, finds himself back on Earth, is extremely shocked, suddenly looks at Kevin) Told ya... Gwen and Julie: (both happy to see him, both give him a tight hug together) Julie: Ben! Gwen: You're alright! Sunder: The Omnitrix, now! Ben: (going to turn alien) Oh I'll give you the Omnitrix alright! (goes to slap the Omnitrix, sees that his hand is missing) Ah, not again!
Kevin: (to Julie and Gwen) And I can't build this thing and protect two ladies at the same time. Gwen: This lady can protect herself, thank you very much! Kevin: But she needs a weapon! Julie: I already have one. (shows Ben's cut-off hand) Kevin: So you're saying you wanna hold Ben's hand!? (laughs) Gwen: (finding it romantic) That's not funny! Kevin: (continuing his joke) It could come in handy. Gwen: (annoyed) Done? Kevin: (taking the hint) Yeah, I'm out.
Brainstorm: Sunder, I implore you, do not exact vengeance upon my veracity-impaired colleague. I hereby definitively, albeit reluctantly, relinquish all claims on said Omnitrix, and render it into your possession forthwith. (zaps Sunder with electricity) I believe the vernacular is "psyche".
Brainstorm: (after being knocked back by Sunder) I sincerely doubt you would display such bravado were you cognizant of your imminent encounter with... (he touches the Omnitrix symbol on his chest and transforms into Humungousaur) Humungousaur: HUMUNGOUSAUR!