In a futuristic world where Earth is divided into two halves, with one part existing in a separate dimension and the other inhabited by humans who can transform into beastly forms, a conflict arises when the humans from the southern hemisphere, led by Uranus, launch an assault on the Beast people. Among the captured Beasts are Wan Derbard from the Tiger Tribe, Bud Mint from the Bird Tribe, and Mei Mer from the Mermaid Tribe, along with Mei Mer's companion Tuttle Millen. Their escape is orchestrated by a young girl named Yuuni Charm Password. Together, they embark on a quest to find Gaia, a legendary treasure, while being relentlessly pursued by Uranus's minions: the fierce mage-knight V-Darn, the warrior woman V-Sion, and Akumako, the sadistic imp-like partner of V-Darn.