Mi-jung wakes up a different gender every morning. She's Nam Mi-jung when she's a man and Yeo Mi-jung when she's a woman. Her friend Jin-soo is in love with Yeo Mi-jung. She also has a girlfriend named Eun-seo. A ridiculous love story takes place between these four people.

A lonely young man is in dire straits, but his friend's mothers don't see him as a boy, but as a man, and take extra interest in him.

Sung-joo and Joo-hee moved into a new house next to Jong-gyu and Min-joo. Joo-hee gives out ddeok to tell them they've moved in next door. Jong-gyu falls in love with Joo-hee at once and thinks about having sex with her. Meanwhile, Sung-joo goes next door to borrow a tool and he falls for Min-joo. The husbands are attracted to each others' wives and soon they cross the line.

Jung-suk's wife runs a boarding house and he helps by cooking, doing laundry, and cleaning. He's under his wife's control, but he doesn't give up his dream of becoming an actor and eventually passes an audition. Sun-mi and Hyun-jung from the boarding house overhear him practice and mistake him for a wealthy man. They seduce him for his money and he falls for them...

Jung-sik and Ji-young got married after a hot relationship, but it has cooled down. One day, Yoon-soo and Sun-young move in next door. They have been married for 5 years, but still look like they're madly in love. Ji-young talks to them about her problems and they decide to help her sex life.

She's sensitive because she's suffering from sexual excitement syndrome, which is sensitive to small stimuli. She has been receiving regular counseling and treatment from her psychiatrist, "Stabilizer," to cure her illness. But her illness, which can't be cured easily, causes her to be in a difficult situation, burning hot even when she's at work...