Keith, George, Edward, Yang and Shaw are Platoon #801, the five-man team formed to protect their homeworld in the Inferious galaxy from alien invasion. Gazaria's evil emperor Vince conquers the neighbor worlds of Kal and Granad, and suddenly only Platoon #801, also known as Condition Green, stands between him and the conquest of Emerald Earth.

Akihiro is a teenage boy with fantasies. He's about to have date with his girlfriend Miyuki when he finds a strange carpet on his way home. Home, a pretty and over-energetic girl named Malon appears from the carpet. She tells Akihiro about the world of Phantasia and wants to live with Akihiro. But even if Akihiro loves pretty girls, he becomes angry with Malon's magical powers and drives her away. The maniac wizard, Roll, who wants to kill Malon, doesn't help at all.