Chandu consults his crystal ball and sees that Nadji, Princess of Egypt, is in danger. She is about to be sacrificed by the black magic cult of Ubasti. Headed for the magic island of Lemuria, he is shipwrecked , washed ashore and captured. He becomes invisible, escapes and after numerous detours is able to rescue the princess.

The queen of mythical Sylvania marries a courtier, who finds his new life unsatisfying.

A bumbling tramp desires to build a home with a young woman, yet is thwarted time and time again by his lack of experience and habit of being in the wrong place at the wrong time..