Three man gather by a dim candle wearing Noh masks to discuss a murder and the profits/inheritance afterwards. Kogoro visits the Museum of Noh Mask Art and is shown an anonymous death threat.

Kogoro, Ran and Conan are invited to a famous writer's house, who wants to speak with Kogoro. After they spend the night, they awake to the three residents of the house murdered! It appears each one was murdered by a different person!