A young man is suddenly stuck with his mother's friend after a financial crisis gone bad. The woman is his first love and her beauty captivates him. She, in turn, sees him as a grown man and their love grows.

Brother-in-law, I will fill your vacancy now! His younger brother Min-hyeon lives with his older brother Jun-hyeon. Pyeong-seok, who was burdened by living in the same house with his brother-in-law, keeps his eyes on Mi-jeong, the young and sexy wife of his older brother. He even imagines sharing love with his brother-in-law at the sound of a strange moan from the next room. One Sunday, my older brother is away from home in a hurry for work, and the two of them are left alone with a strange feeling...

My wife's mother, is better than my wife! Woo-suk married his wife Yoo-na because he loved her, but in the end, they go through a period of ennui and he's not happy with their sex life either. One day his wife goes to work without even making him breakfast and her mother comes home. She's a young-looking woman good enough to be in her 20s with a tiny waist and big breasts.

Jung-tae has become a successful businessman. One day, he calls for a substitute driver, but the driver was Min-goo, the man who married his sexy crush, Yoo-ri. Jung-tae still hadn't forgotten Yoo-ri and learns that life if tough for this couple. Jung-tae suggests something to Min-goo and that is to let him live with Yoo-ri for a year in return for 300 million won and his house.

Stop peeking and let's have a fling. Min-ho works at a private detective agency where peeking into others' lives is what he does. One day, a pretty woman named Mi-na asks him to tail her husband and Min-ho is in for a shock. The man he's tracking down is in an affair with his wife, Soo-kyung. The place they meet each other is usually Min-ho's house after he's gone to work. Min-ho installs secret cameras to catch theem in action and watches the scene with Mi-na.

Two couples vacation together. They were friends and campus couples in college. Meeting again after the years passed sparks new attractions.

Dae-sung and Jung-won have been married for two years. They are car pooling with the married couple next door. Woo-sung and Tae-hee don't interfere with each others' lives. However, these two couple don't just share cars, they share each others' wives too...

Do-won is a twenty-year-old who lives with his mom. However, he is secretly sleeping with his mother's friend Eun-ji who lives next door. One day, his mother's junior's husband dies and she moves into the neighborhood. Since then, his mother and her friends see alot of each other and So-jung who misses having a man, starts seducing Do-won...

Twenty-year-old Jingu has an unrequited love for his housekeeper, Hyun-ah, who has a lush face, sexy body, and friendly personality. However, Hyeon-ah declares marriage to his father, not Jung-gu! One day, Jingu witnessed a scene where Hyun-a is having a hot time with a man other than his father, and he feels a tremendous sense of betrayal. Since then Jingu has shown her secretly filmed scenes, asking her to listen to only one wish...

Joon-ho falls for his new step-mother, Min-joo. He suppresses his feelings because she is his father's woman, but one day his father passes away. In addition, the step-mother has been throwing him signs and her daughter Eun-jung leaves the house. Joon-ho is alone with Min-joo and he comforts her for losing her husband. However, he ends up comforting her not just mentally, but physically as well.

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...