The archeologist father of a young girl named Natsumi returns from a dig in New Guinea with a statute as a gift for his daughter. Unknown to Natsumi is that the statue is the seal for the God of Destruction and Chaos, Ongo. She releases Ongo when she puts on the jewel earrings of the statue. Instead of being a horrible monster, Ongo turns out to be a super-deformed jungle boy. Natsumi then has a dream where Aham, God of Earth, appears before her. He's a perverted old shaman that has a large horn covering his private parts. Aham gives Natsumi the skull necklace that allows her to transform into the extremely busty Flower Goddess Mii. To transform, Natsumi must do an erotic and perverted dance.

Rongo the Water Spirit, Ongo's fiancee from several thousand years ago, uses her magic to locate her lost love. When she finds out that he's in Japan with Natsumi, she is absolutely furious!

Ongo, God of Destruction, appears at Natsumi's father's museum and destroys the building. He wants to destroy the whole world, but Mai and Ahem the witch doctor step up and fight back. Mai becomes the Flower Spirit, and she chants a spell along with the spirits of the jungle. Mai becomes a giant capable of fighting Ongo.