The couple's relationship had grown cold. Hurt by her husband's indifference, the mother finds solace in an illicit affair with her son. After the husband leaves for work, the two indulge in their secret passion. One day, the son makes a bet with his friend: "Who can have sex with the mother first? The loser has to obey any command." Tempted by the challenge, the friend approaches the woman who raised him with an outrageous request—and the shocking outcome exceeds all expectations.