The story is set in the 70s. Fumiko is a university student, who gets involved romantically with her assistant professor Katase Shintaro and his wife Hinako. However, on 28 February 1972, the police finds Shintaro seriously injured and a young man working in a electronics store dead in a bungalow at Karuizawa while Fumiko and Hinako are also present at the scene. The truth behind the case is not known and the
