While investigating the history of the haunted house, the doctor invites three people to help him with his inquiry. And the history of this house on the hill is terrifying: the owner drowned, his two wives died under mysterious circumstances, and the daughter who inherited the house died after the nurse failed to help her. The nurse herself committed suicide after taking possession of the house. The house welcomes new guests and begins a terrifying game with them.

The year is 2040. Thirty years have passed since the conflict between Earth’s forces and Zentredi, an event that changed the course of both races’ history. On the planet Eden, as part of the top-secret “Supernova” project—aimed at creating a new-generation multi-role fighter—comparative tests are underway between two prototype transforming fighters: the YF-19 from Shinsei Industries and the YF-21 from General Galaxy. Ironically, the test pilots for the rival companies are former friends: the half-human, half-Zentradi Gald Bowman and the young hothead Isamu. Once upon a time, the two of them, along with their friend Myung, were inseparable. Now, Myung is the producer of the virtual idol Sharon Apple. When the three of them meet again, the resentment of the past flares up between them. They have no idea that the “Supernova” project and Sharon Apple might be connected.