A member of the high school art club called Sakuko falls into the sea while sketching a boat. Witnessing the incident, Saibara creates a painting titled "Drowning Sakuko" and wins an award at a contest, leading the painting to be displayed at school. Moreover, Saibara takes the liberty of announcing that she will paint Sakuko for her next piece during a newspaper interview. Frustrated by the situation, Sakuko gives up on her artistic path and attempts to create a new work with the motif of a "boat" in her home, which is scheduled for demolition.

Kazuhiko, a graduate of a prestigious university, wasn't enjoying his life, until he takes a job at a bathhouse. Then he discovers that the baths are used as a space for killing people after closing hours.