Her husband is a general manager at a construction company, and now the couple lives together. They lead an ordinary life, but the husband accidentally witnesses his wife Etsuko cheating on him. The husband finds himself extremely excited, amidst the humiliation and jealousy. He makes a proposal to his cheating wife as punishment... She must be cuckolded, and moreover, by one of his subordinates... The subordinate is promiscuous and still single, even though he's over 40...