A popular intergalactic circus featuring unique creatures from across the galaxy comes to Acmetropolis to entertain the citizens.

Mallory Mastermind, Sypher, Weathervane, and Massive have been unwillingly recruited by a mysterious alien being known as Optimatus.

Zadavia reveals the location of Optimatus' hideout and the rescue on Danger Duck. When Zadavia is captured, the Loonatics must rescue her, save Acmetropolis, and defeat Optimatus.