When Dodgers brings Earth and Mars to the brink of war, Dodgers betrays Cadet by letting him take the blame for Dodgers' offense, landing the young pig in space prison.

The treaty signing does not go smoothly, and Dodgers finally realizes he must restore his friendship with Cadet by clearing Cadet's name. They join forces with Marvin to capture Z9, who kidnapped the Martian Queen in a grab for power.