A woman is murdered on a train and the station employees help to solve the mystery.

The background to and depiction of a watershed battle in Japanese history, at Sekigahara in 1600, when Tokugawa Ieyasu's Army of the East defeated the Army of the West of Ishida Mitsunari. The story includes the intrigues and shifting loyalties of the various retainers, family members, and samurai.

The body of Kou Fujisaki, who fell to her death, is discovered in front of an old building in West Shinjuku. Chief Sakamoto notifies Ushio, who arrives at the scene. Ushio thinks that this must be a murder, but according to Yamaji, who was at the scene before him, an eyewitness testified that Kou had jumped off the roof of the building, killing herself. Kou is someone who has lingered in Ushio's memory - as a suspect...

A film about an orphan kid in Japan in 1943