With all five aliens in his possession, Aggregor tries to return to his home planet Osmos to absorb all of their powers, but a Plumber ambush damages his ship, so he instead heads for Los Soledad in order to use Paradox's time machine as an alternate power source. Despite Ben 10 Sinhala, Kevin, Gwen, and Grandpa Max's best efforts, Aggregor succeeds in absorbing the aliens' forms and powers, turning himself into an unstoppable amalgam of the quintet: Ultimate Aggregor.
