In the legendary past the gods battled for supremacy and cast out the demon god whose name cannot be spoken. Banished to Earth, the demon found refuge on the mysterious and dangerous island known only as "G."

Suzu uses everything she's got to drive her sisters away and increase her powers. Meanwhile, Olivier seeks a weapon to use against evil pursuers, and himself, if "Black Olivier" comes through again. How did this terrible fate befall Olivier, and what effect will his protective measures have on both him and his companions? Is the secret history of Gestalt somehow mirrored in the present? Time will tell, but not before Ouri gets another chance to mop the floor with some persistent enemies!