The Stooges are janitors working at a space center who accidentally blast off to Venus. They encounter a talking unicorn, a giant fire breathing tarantula, and an alien computer who has destroyed all life on the planet and creates three evil duplicates of the Stooges. When the boys return home triumphant, they are given a hero's welcome. The movie ends in typical Stooge chaos (at a society dance {where Uni is the guest of honor} the Stooges stupidy causes a free for all; as our heros escape with Uni, the robot duplicates appear and attack the dancers; finally, the Stooges sing the movie's end while riding through space: Larry and Curly hit Moe in the face with cream pies .