Yamaguchi Shoichi has a second wife named Tomoko. This Tomoko is an exceptionally lewd woman who craves nightly activities every evening, but Shoichi hasn't been able to satisfy her for the past year. The reason is that his company's situation is dire, and he is exhausted from overwork every day. At such times, Shoichi catches Tomoko in the act of masturbating. Feeling guilty as a husband, Shoichi has an idea: let his wife be taken by another man.
