Mina has been cheating on her husband and son repeatedly, with no sign of being found out. She thought that if she played it well, she could maintain harmony in her family and still enjoy her infidelity. But one day, her son's friend, who was visiting, overhears a call she had with her lover. Mina desperately tries to cover up the truth, but her son's friend, grinning, offers her a condition for keeping quiet: "If you want me to keep quiet, you have to do to me what you do to your lover."