Lex Luthor uses a reverse camera projector to disguise himself and his assistant Orville Gump as Super Friends in a plot to destroy them. He teams with fire demons from the sun, who help capture the heroes and place them in deadly traps. The demons turn the sun red, stripping Superman of his powers. When they betray Luthor, he frees the heroes. Superman drives them back with the Super Mobile, restoring the sun and his powers. Luthor and Gump return to prison.