Jon Lovitz is alien emperor Tod, ruler of Spengo, the tiniest planet on the universe. Tod has only one aim: destroy planet earth and lead Spengo to glory. There are only two problems that stand in his way: Tod is an idiot, and so is everyone on his planet. As Tod aims his death ray at Earth, he spots Marge Nelson, an average American housewife, and falls hopelessly in love. Delaying his plan of destruction, Tod beams Marge up to Spengo and in the process accidentally beams up her husband Dick. On the planet, they discover a world of fantastic creatures, many of whom would like to see Tod removed from the throne. While Tod plans his wedding to Marge, Dick escapes from Tod's henchmen and leads a battalion of dim-witted but brave natives in revolt. Can Dick rescue Marge and save Planet Earth?