Kanbara Kiko is a divorcee and raises her 5-year-old son alone. To open a box lunch food store, she moves to her grandfather's house. She tries to enroll her son Haruto into nursery school there, but a person in charge of the district office tells her Haruto can't attend immediately. Kiko, busy to open her box lunch food store by next month, finds herself in a predicament with her son not having supervision by then. At this time, a director of a kindergarten school, Fune Naraoka, talks to Kiko.