Four women of different ages work at or frequent an ice cream shop, each dealing with dreams, timidity, inexperience with love, and personal pain, their lives intersecting at the shop.

Yuta Kimura is the leader of an unsuccessful theater troupe. Yuta, who dreams of becoming a film director, runs a small bar in Osaka while running an unsuccessful theater troupe.

An aimless college student comes upon the aftermath of a murder scene one night, and without thinking, grabs the titular weapon. He takes it home and keeps it safely hidden…