a husband (isao hashizume) and wife (kazuko yoshiyuki) have been married for 50 years. for her birthday, the husband asks the wife what she wants for her birthday present. she replies that she wants a divorce. the wife's divorce announcement sends the entire family into chaos. their children are thrown into a state of panic to hear this news of separation. amid the sudden tumult of life, each member of the family begins to voice out their respective grievances.