One day, Jae-kwon who lives alone decided to live in the same house with his cousin Jae-won. Jae-won, who was adopted as a younger brother, eagerly followed his cousin's authority when he was young, but he is increasingly agonizing over how to express his feelings as a heterosexual. The relationship with Hyo-seong, is a kind of relationship where they are not responsible for each other, but is only financial...

Kang-cheol and Mi-na are a couple. Kang-cheol is getting less and less confident... It's embarrassing to be criticized by Mi-na. He decides to listen to his colleagues and seek help from medicine... Mi-na, who is discontented, also decides to buy a dildo from her friend. Kang-cheol went to a massage shop. He gained confidence though he's unsure whether it was the drug or if the service was just good. When the dildo broke while masturbating, Mi-na got angry and complains to the company... A male employee comes and provides A/S service, saying it is a temporary service. Kang-cheol witnessed the suspicious scene and calls the company... This time, a female employee came to serve him... However, the female employee only sold the goods and left... Kang-cheol is happy while looking at purchased adult products...

Tonight with another man! Seong-kyoon and Soo-ae live together, two people who don't know whether they only live together, or married. Seung-kyoon loves Soo-ae so much that he's been living a modest life One day, Soo-ae tells him that she has a man He finally kicked Soo-ae out of the house, but still dying to see her Seong-kyoon who couldn't stand the situation has to make an important decision...

Yeong-cheol, a fund manager with a good academic background, likes Ji-min, a graduate student whom he recently met on a blind date. Seo-ra, a friend of Ji-min, is living at Ji-min's house while working a part-time job due to financial difficulties. He designed clothes at Dongdaemun, but he is working in an office without Ji-min's knowledge because he is having a hard time these days. Yeong-cheol, who often uses the office, goes to the new office one day and meets Seo-ra. Being so satisfied with the service, Yeong-cheol brags to his colleague Jin-ho. Jin-ho is curious and goes to the office to meet Seo-ra. Yeong-cheol and his two friends, who went to Ji-min's house for a walk at Ji-min's invitation, meet Seo-ra, Ji-min's friend, in front of the house. Ji-min introduces Seo-ra to Yeong-cheol...

The three people who have come to live together live in peace, enjoying sex with each other's needs. But one day, Min Ji meets Hyeon Soo, who she had a crush on when she was young.

Ga-eun and Su-ho grew up like brothers and sisters. However, Su-ho never showed that he likes Ga-eun ever since they were young. One day, Suho accidentally found Ga-eun's diary and found out that she also likes him. Su-ho reveals his feelings to Ga-eun. Ga-eun is not his real sibling, but to protect their parents, she rejects him...