After a failed landing attempt, the astronaut "Major Anthony ´Tony´ Nelson" is stranded on a desert island where he finds a purple bottle. Following the now classic Hollywood cliché, "Nelson" rubs the bottle only to find that a genie, funnily named "Jeannie", lives inside. As thanks for freeing her from her cage, she is obliged to grant the major anything he wants which leads to a ton of magic-filled shenanigans. "Jeannie" quickly falls in love with "Nelson" and they even get married at the end of the show.