As the episode progresses, Ben finds himself in a surreal nightmare world where:
The Ben 10: Ultimate Alien episode (Season 3, Episode 17) is a psychological thriller that serves as a pivotal character study for the series' recurring antagonist, Albedo . Premiering on March 10, 2012, it is the final episode before the three-part series finale . Plot Summary As the episode progresses, Ben finds himself in
: His parents and neighbors have vanished, and his friends Gwen and Kevin act out of character, demanding he hand over the Ultimatrix . As the episode progresses
: He is relentlessly attacked by past enemies like the DNAliens, Vilgax, Aggregor, and Ultimate Kevin—none of whom speak . Albedo . Premiering on March 10