Ji-min is married to Hyeon-soo, a married man with a child. However, Woo-yeong wasn't Hyeon-soo's own son either. The age difference is so small that she feels uncomfortable in her relationship with Woo-yeong. On the other hand, Woo-yeong falls into a sense of self-doubt that she feels love from Ji-min and that feeling from her mother, but accidentally finds out that she is an adopted child and confesses her heart to Ji-min.
결혼 2년 차의 민상과 유라. 민상은 아내 유라와 그녀의 여동생 유미, 셋이서 함께 살고 있다. 부모님이 일찍 돌아가셔서 혼자 살아온 민상과 역시 부모님이 사고로 돌아가셔서 여동생과 둘이서 살아온 유라는 서로 이런 공감대 때문인지 결혼 정보 회사에서 소개를 받았을 때 서로 끌리게 되었고, 결혼까지 하게 되는데... 민상은 처제가 점점 여자로 느껴지기 시작한다.
Hee-soo goes to her ‘rich lover Seok-ho’ while her husbands is on a business trip. Her younger brother Hee-yeong and her husband Jeong-tae are also together. Hee-soo introduces Seok-heo to Hee-yeong and Jeong-tae, and Seok-ho falls in love with Hee-yeoung at first sight. As Seok-ho tries to avoid Hee-soo’s eyes, and meet with Hee-yeong’s eyes instead, he decides to take advantage of Jeong-tae. Jeong-tae who dreamed of having sex with Hee-soo, seduces her, and while Hee-soo and Jeong-tae were playing, Seok-ho wins and took Hee-yeong as price. These people who are complicatedly intertwined, are at a crossroads to choose whether to disperse or become a new family.
유니는 대학교 신입생이다. 대학생활 처음으로 소개팅을 하게 된다. 상대는 4학년 복학생 민철. 서로 한눈에 반해 사귀게 된다. 행복한 연애를 즐기고 있는 유니 친구 희진의 전화를 받는다. 희진은 서로 좋아하면 속궁합도 맞춰 봐야 되는 거 아니냐며 바람을 잡는다. 희진의 말에 당황하는 유니, 결국 민철과 유니는 모텔로 가서 합의하에 서로 섹스를 하며 속궁합을 맞춰본다. 다음날 유니는 민철에게 당분간 시간을 갖자는 말을 듣고 충격에 빠진다. 유니를 위해 친구 희진은 이유를 알아보고 유니에게 민철은 자신과는 속궁합이 너무 안 맞다 며 충격에 빠졌다고 말해 준다. 희진의 정보로 섹스의 퀸이라 불리는 선배 아라를 소개받은 유니는 아라에게 다양한 섹스의 기술을 배운다. 아라의 애인 진수도 조교로 나서며 유니를 최고의 섹스 머신으로 조련한다. 아라에게 모든 섹스 기술을 전수 받은 유니는 아라가 민철을 꼬시고 둘이 섹스를 나누기 전 민철의 눈을 가리고 아라를 대신해 민철과 섹스를 나눈다. 섹스가 끝나고 안대를 벗은 민철은 유니보고 놀라며 다시 만나자고 애원하지만 유니는 민철에게 섹스를 못해서 만나기 싫다며 복수를 한다.
Man-soo who is dating Kyeong-ja is heavy-hearted because he has been unemployed for a long time. One day, he receives and unknown package and finds an ona hole inside. That night, the ona hole fairy appears in a dream and had a love affair with Man-soo. Man-soo thought it was just a dream. The next day, Man-soo got a call from his childhood friend Yeon-sil, drank while depressed, and slept with her afterwards. Meanwhile, that night, Kyeong-ja found a mysterious package with a dildo inside. In Yeon-sil’s dream, a dildo fairy appears and has a love affair...
Ji-min, Hyeon-soo, and Woo-yeong, play together at Ji-min's house. Hyeon-soo happened to see Ji-min change her clothes while playing. Hyeon-soo, who secretly likes Ji-min, ran away excitedly after seeing Ji-min's skin. Woo-yeong, who saw Hyeon-soo like that, actually made a funny suggestion to Ji-min who was his sex partner. Ji-min calls Hyepn-soo and uses the fact that Hyeon-soo likes him to have sex. Hyeon-soo moves according to Woo-yepng's plan.
Before Ji-min becomes a college student and gets a room, he comes to his old brother's house. Hyeon-soo found out about the fact late, but he is embarrassed, but feels at ease with Ji-min. However, Ji-min, who became a woman from a little girl, became more and more fond of her. But Ji-min had a boyfriend and Hyeon-soo tried to calm himself down, but while comforting Ji-min who broke up with his boyfriend, he heard that he was Ji-min's first love.
Seong-hye of Room Salon Ace Inn is tired of the rich men who always run at her. One day, she feels shaken by the appearance of innocent Jae-min, but due to interruption of Dong-cheol who admires Seong-hye, she gradually falls into a deep pit.
