An erotic film about the sexual pleasure of a stepmother and her stepson.
Ho-joon, who has just gotten a job, follows his boss, Chang-wook, to the red-light district. Young Madam Ye-rim welcomes the two and says that since the girls are all tied up in different rooms today, she will deal with them herself today. As soon as Ye-rim sees Ho-joon, she takes a liking to him, and the two become closer. When Ho-joon returns home and is about to go into his room while very drunk, his stepmother, who was drinking alone, comes out and greets him. While Ho-joon is drinking with her stepmom, he thinks he is still in the red-light district and mistakes her stepmom for Ye-rim. Her stepmom helps him take off her clothes without understanding, and she is surprised to see something large hidden in his pants.
