Eleven years ago, Muroi Masayuki's life was saved by a Yuki-Onna up in the snowy mountains. Betrayed by his friends and his wife, he ended up anti-social and unable to trust anyone and eventually moved to the town at the base of the mountains where he met the Yuki-Onna. As he was wandering around town, he coincidentally runs into a woman who looks just like the Yuki-Onna...?!

Masayuki is suspected of killing his ex-wife when the police find her dead. There was a message written in blood on her hand that put Masayuki at a great disadvantage. The only one who can vouch for his innocence with an alibi was Yuki-Onna, who was with him at the time of the murder. But there's no way he can let a yokai provide a statement for him. Yuki-Onna asks Kotoko for help to track down the real killer.