At school, Zastin accidentally reveals that Lala is an alien. Zastin also takes Lala, Rito, and Haruna into space to be ambassadors of peace. They meet an alien, Prince Carter from the planet Burroughs, who invites them on a hunt at a secret underground alien hunting preserve in the jungles of Guyana. The one with the most success on the hunt wins the title of the Greatest Hunter in the Universe. They encounter dinosaurs, Amazons who wish to marry Rito, and a giant gorilla "Ginga Kong" which Haruna tames. In the end, Haruna wins the title of the Greatest Hunter in the Universe.