There is a planet full of exotic interplanetary people. All of them living together in a dangerous multicultural world. And right there in the middle there is Megan! A young human girl fighting her way up on the deadly arena of the Intergalactic Mixed Battling Arts as she searches for her origins and other beings like her while she is obsessed with a mysterious, long forgotten planet: Earth.
Megan discovers the secret behind the human colony on the distant moon of Esper! Alongside Dana, leader of the survivors, they devise a rescue plan to free the prisoners from the Space Invaders. But, is that plan doomed from the beginning?