Arin (played by Kimura Fumino), who hides the ninja past, lives a peaceful life with her unrelated daughter, Red Crane (played by Tamaki Sora), as the assistant of doctor Genzaburo (played by Katsushi Takahashi).One day, in order to get medicine to treat the red-crowned crane disease, Korin and Genzaburo went to the distant Okada Village.

But there, the two were attacked by a terrible monster.That is the zombies that cannibalize people...On the other hand, the mysterious man Shirou (played by Tanaka Kiku) came to Youguo and confessed his origin to Younu's daughter...