This movie starts with Saze X playing basketball. Suddenly, a lightning bolt hit the earth. They walked towards it and found a boy. The boy's name is Ricky, and he thinks he has forgotten everything. On the other hand, Remy told Sazer-X that a giant monster named Mechanical Giant Bulgario had approached Earth and was destroying buildings. Sazer X still defeated the monster. But then something flashed into their eyes, and Takuto mistook it for a cosmic capsule. In fact, this is the Bosquito people that exist within Bulgaria, which Professor Horiguchi later explained.
ハヤトが絶好調の第12回大会。しかし第5戦イギリスグランプリで、ハヤトはランドルとクラッシュしてしまった。それは「ZEROの領域」と呼ばれる、ドライバーの全神経を極限まで高める感覚に目覚めたハヤトが、感覚に振り回されて引き起こしたものだった。
在幽暗可怖的冥府之中,有一个相当于警察局的,被称为“十王厅”的神秘机构,除了审判一些罪孽深重的死者外,十王厅还担当了调查人间非正常死亡事件的重要职责。