Vilgax possesses immense durability, being able to easily make Diamondhead shatter his own fists, [2] survive being thrown into outer space by Way Big at a high velocity, [3] withstand Chromastone's lasers, [15] recover within seconds from the Omnitrix's explosion, [16] and even endure a brutal assault by Diamondhead, Atomic-X, Electricyeti and Gwen 10's Cannonbolt. Additionally, there is also art that features him wielding a hammer and an unidentifiable weapon that is never seen in the show. While the three are asleep inside the Rust Bucket, a bright light wakes the Tennysons up at 3:30 AM. These items include comic books, board games, card games (such as Top Trumps), toys, video games, Lego construction sets, bedding, coloring books, footwear, and watches (the Omnitrix and the Ultimatrix). The wheeled motor vehicles, appearing like normal cars, are equipped with several pieces of Plumber technology such as a turbo engine, laser guns, and autopilot.

These specials serve as both the series finale for the 2016 reboot and a crossover event involving the first four television series in the franchise. On the way, Ben is crestfallen at his greatest failure and must now figure out how he is to break the news to Max.The Omnitrix, its Ultimatrix replacement, and the "finalized" version that is the New Omnitrix are the central elements of the Ben 10 story.

Ben elects that if he's going to have to give up going hero, he's at least going to take down Vilgax once and for all. The Alien Force toys are four rings, each one is an alien (Goop, Jetray, Alien X, Chromastone) with features linked with their powers. During their vacation, the Tennysons are attacked by various enemies, ranging from aliens such as intergalactic warlord Vilgax, bounty hunter duo Sixsix and Kraab, and Ectonurite high king Zs'skayr, criminals such as 11-year-old energy absorbing delinquent Kevin Levin, mad scientist Doctor Animo, and the mysterious paramilitary organization the Forever Knights, to supernatural entities such as interdimensional sorcerer Hex and his niece Charmcaster, and clown mastermind Zombozo and his Circus Freak Trio. All badges bear the intergalactic peace symbol, a green hourglass shape, which is on the faceplate of the Omnitrix. It also allows him to transform into the Ultimate Forms of his aliens without first turning into their normal forms.Later Chowder and Ben find Vilgax with Mung who then explains how they are in another dimension instead of another planet.

The Omnitrix appears in the first two incarnations of the franchise ( Ben 10 and Ben 10: Alien Force), but Ben had to destroy it and use the Ultimatrix in the Ultimate Alien series. Ben's attack successfully overloads the system and shorts out the bomb's timer, neutralizing the threat. The main melody of the theme song to Alien Force features an instrumentation of the melody of the two verses, in half-time. Grey Matter reverts back into Ben and falls, but Gwen catches him with a spell just before plunging in the vat. This leads him back to when they fought Animo at the reactor, but further condemns this as a mystery and tells Gwen that it doesn't really matter, assuming Tetrax can handle it.

Meanwhile, Ben, Gwen, and Kevin must stop an Osmosian villain named Aggregor, who hunts five elemental aliens from the Andromeda Galaxy and intends to use their powers to achieve the "ultimate prize". Though it causes him great pain, [pop-up 3] [13] the boosters give him enough strength to smash apart mountains with his bare hands.

The first verse features clips from And Then There Were 10: Ben reaching out towards the pod; the Omnitrix inside jumping out and latching to his wrist; first raising and lowering the dial; and Heatblast's first transformation sequence.

Vilgax attacks Ben and he runs off since there's nothing he can do with the Omnitrix in its current state.