Ataru has been randomly selected from Earth's population to face Lum Invader in a duel that will determine the Earth's fate./Lum's Stormtroopers summon Lum's UFO but instead get an intergalactic taxi that takes them through subspace. The fare for the taxi is the value of all the oil on the planet.
In the first episode, only high-schooler Ataru Moroboshi can stop an alien invasion by playing tag with the gorgeous princess of the invaders, Lum. Against very long odds, he wins, only to find he now has an unexpected wife. While she's away, Ataru accidentally calls a space taxi. The fare: the Earth's entire supply of petroleum!—Pat Payne