While Bugs is sleeping, a rocket is placed over his hole. He climbs abord and finds himself in space, where Marvin the Martian has finished his laboratory research and is about to destroy the Earth; it's up to Bugs to save the world.
Hare-Way to the Stars
Suffering from a rabbit-hangover Bugs accidentally climbs onto a rocket ship parked directly over his hole. He's taken to Marvin the Martian's home where he steals explosives Marvin was planning to use to blow up the Earth.