"Who is it that you truly killed?" Ochou, a woman imprisoned and sentenced to death for the crime of the massacre of the Sasaki family, including her own husband and mother-in-law. The medicine seller suspects the presence of a Mononoke behind the incident. At that moment, a mysterious man wearing a Noh mask appears, trying to take Ochou out of the prison...!? The sorrowful fairy tale of a Mononoke who fell in love and the criminal Ochou, now begins—.