After past breakups and unfulfilled romances leave novelist Ayana reluctant to truly fall in love, she tries to face her current relationship sincerely.

A man trapped in an endless sterile subway passageway sets out to find Exit 8. The rules of his quest are simple: do not overlook anything out of the ordinary. If you discover an anomaly, turn back immediately. If you don’t, carry on. Then leave from Exit 8. But even a single oversight will send him back to the beginning. Will he ever reach his goal and escape this infinite corridor?

Aoi has dropped out of high school and gives birth to a baby son with her husband Masaya. They live in Okinawa, the Southern island of Japan where they were both born. To make ends meet, she starts working as a night-club hostess. Masaya loses his job and cannot deal with the family’s responsibilities. Their immaturity and dependence aggravate the relationship and continuous fights lead to a social downfall. Aoi’s bond with her son sets her on a path to find solutions.