Bill Gacks, an (actual) human plumber who resembles Vilgax (due to his beard), accidentally activates a weapon Vilgax set to attack Bellwood while fixing Pakmar's plumbing in Undertown. When Psyphon returns, he believes Bill is Vilgax, and, elated that his master has returned, pledges to help him in any way to destroy Bellwood. Meanwhile Ben and Rook try to stop Vilgax's squid monsters that the weapon accidentally released.

Dr. Animo from the Future return to go to the present to break Dr. Animo out of prison, and to steal something from the SACT so that they can populate and rule the Earth with Mutant Animals, and in order for Ben and Rook to stop him, they get assistance off someone from the future currently known as Chrono-Spanner.