Natsuya works at a delivery health service run by a mysterious middle-aged man named Yata together with Harumi, who dreams of opening a store with her boyfriend Takashi, and Akino, a divorced woman who struggled to get into this business. One day, on her way home from work, Natsuya is shocked to find herself floating in the river.

Noriko Masaki
as Natsuya

Hōjō Koto
as Harumi

Kyoko Hashimoto
as Akino

Kikujiro Honda
as Hattori

Ginji
as Kizaki

Kyôsuke Sasaki
as Shibata

Naohiro Hirakawa
as Mori

Mikihiro Hyôdo
as Takashi

Kazu Itsuki
as Inoue

Saburō Isurugi
as Yata-san