Three men who have never properly been with a woman finally come face to face with their chance in the form of confident, aggressive women in their thirties.

Min-ah and Jin-sung have been married 2 years, but Jin-sung can't get an erection no matter what Min-ah does. Min-ah's sexual appetite ibuilds until one day, Jin-sung gets a call from his friend Oh-hyun. His business failed and he was kicked out of the house so he needed a place to stay for a month. Oh-hyun came with his wife a few days later, but Jin-sung gets an erection as soon as he sees her. Min-ah suggests a shocking deal.

A young man is preparing for the public official exams and is invited to his aunt's house to stay to save money. There he encounters an unexpected attraction.

A young mother-in-law falls in love with her daughter's boyfriend.

Sun-young and Do-han have been married for 3 years. Do-han's failure in business loses his home and they move into Sun-young's dad's home where he lives alone. Sun-young starts going clubbing as she can't stand her incompetent husband and meets Jung-hyun there. She comes home drunk every night or spends the night out, but Do-han can't say anything to her. Then one day, Sun-young's father, who is away on work, calls to say a woman who is going to be her step-mother is stopping by. Kyung-mi comes along. Kyung-mi's father met her on his business trip and was going to return home with her, but his trip ended up taking longer so she came ahead of him.

When I was a high school student, my sister was a sexy friend who kept me from falling asleep with all kinds of delusions every night. Min-soo's thrilling delusion catches fire after she accidentally meets her naked sister at home. After becoming an adult, Minsu and his friend Yong Joon get a job at a sister company. From her sexy friend, Minsu's secret work towards her, who is now reunited as a sexy female warrior, begins...