Affair Is a Business

Yeong-gyoo is a funny guy who worries about his wife while cheating on her. One day, the wife makes a secret move. Yeong-gyoo is suspicious and follows her. He meets a mysterious woman named Jin-joo. Yeong-gyoo has a questionable relationship with Jin-joo, and it turns out that he is the lover of his junior Min-soo. Yeong-gyoo, who has a lot of thoughts, finds out about his wife Annie.

Ji-won is an erotic writer, but she has not had sex yet, so she cannot write realistically. Eun-sik and Seong-gook compete for their first sex under the pretext that Ji-won is a virgin for her work, and Seong-gook's plan goes up in smoke when his wife Hyeon-hee returns home. On the other hand, Hyeon-hee is curious about Eun-sik and approaches him because his previous job is adult learning and mastering. In this situation, will Ji-won be able to finish her first sex safely and write a huge masterpiece?

Yeong-joon, who usually loves stockings, happens to see next door Hye-mi's red stockings and feels a sneaky excitement. Afterwards, Yeong-joon begins to show a kind of pathological obsession with stockings. He shared the same roof with the woman next door due to the sudden suggestion of his wife. His obsession with stockings becomes more intense as he collides with her.

Hye-kyeong enters as housekeeper of Soon-sil and Jeong-seop. Hye-kyeong accidentally found out that she is in a religion like Soon-sil! Using a sense of belonging to Soon-sil, she attracts his lover Tae-bong. Meanwhile, Soon-sil is possessed by Tae-bong, and Soon-sil's husband, gangster Jeong-seop, falls for Hye-kyeong. Hye-kyeong, Jeong-seop, Soon-sil, and Tae-bong use their minds to take over each other.

Dong-goo and Yeon-hee are losing their love and affection for each other because of their insensitivity to sex and sexual preference due to being married for a long time. Then one day, Dong-goo hears the story of sex master Wang-nan from his sex partner Yoo-gyeong and finds her for a different sex. After many twists and turns, the two, who found Wang-nan's disciple Min-yong, began training to receive the essence of sex from Wang-nan. However, Dong-goo began to rebel with doubts about the training of Wang-nan. However, Yeon-hee is so into Wang-nan. Will Dong-goo be able to protect Yeon-hee from them?

Tae-soo calls for a business trip massage for his sick wife, Hyang-gi, then Yeong-ho, the top of the massage world appears. Hyang-gi falls for Yeong-ho and eventually declares her divorce from Tae-soo. Tae-soo calls for another massage to get his wife back and revenge on Yeong-ho, then Joo-hee, a tomboy comes, and Tae-soo learns to get a massage with Joo-hee's help and tries to find his wife...

Mi-yeong, who is abused by her boss Yeong-goo every day, decided to take revenge. She used her husband Jong-seong to secretly film Yeong-goo's private life and threaten him. One day, Mi-yeong, who witnessed the rough sex of Yeong-goo and his wife, In-ae, started to heat up. Husband Jong-seong also passes on to In-ae, Yeong-gu's wife. Mi-yeong begins to change her mind when all the plans unexpectedly go wrong.

Joon-yeong happens to know that Yeon-ji is a virgin. He uses his junior Joo-won to break down Yeon-ji's air conditioner outdoor unit to seduce her. Yeon-ji and Mi-ho, who are tired of the heat, stay at Joon-yeong's house. The four of them are living together! Joon-yeong tries to seduce Yeon-ji, but every decisive moment, Mi-ho and Joo-won interfere. One day, Joon-yeong and Mi-ho go out and they are left alone. Joo-won enters her room to a virgin Yeon-ji...