Woo-jin, who is a repeater of college entrance exam, and Taek-sik's friend, Kang-hee come and visit Woo-jin's hometown on a small island. Woo-jin's mom, Hyeon-sook operates a small sashimi restaurant and a bed and breakfast to make a living on the island. Although Hyeon-sook has sex with Bong-seong, she rejects his proposals. One day, Woo-jin is terribly shocked to accidentally see his mom Hyeon-sook and Bong-seong having sex.

I had a dream...sleeping with you and Hwa-yeong. Jin-goo and Joo-hee were happy until one day their daughter Hwa-yeong, who had eloped with another man, came home. Hwa-yeong and Jin-goo were a couple at school and she had gotten pregnant. So things took place quickly and they got to live with Hwa-yeong's mother Joo-hee. However, when Hwa-yeong found out she wasn't pregnant, hit it off with another man and left the house. Jin-goo and Joo-hee had fallen in love while she was gone. Hwa-yeong had broken up with her other man and came home. However, she finds it weird that Jin-goo is still at her mother's house. Jin-goo and Joo-hee put out all sorts of lies to hide the truth from Hwa-yeong.

Yeong-gil is in graduate class and is stressed about getting a job. To make things worse, he's not had any experience with women yet, so he's always searching for something in his dreams but wakes up to nothing. Then one day, there is a change in his life, he puts his hand in The Box of Pandora and gets a job although it wasn't a regular position. He sleeps with his female superior during the interview even though it's not how he imagined it. Then one day, he visits Joo-yeon's home and meets her beautiful mother. Can he keep himself from being seduced by this woman?

Nineteen-year-old, Jin-goo enjoys an erotic moment to himself while thinking about his pretty English tutor. Then one day, he is caught in the middle of an embarrassing moment and becomes awkward with her. However, this becomes an opportunity and she starts teaching him sex. Their replationship becomes an uncontrollable romance. However, she quits the tutoring and the relationship to get married. Time goes on and Jin-goo is a grown up. He's used to thoughtless sex. However, his partner of benefit gets pregnant so he meets his future-mother-in-law to talk about marriage. However, she's so beautiful and sexy. He moves in with the in-laws but soon breaks out of the marrige due to his wife's fling. The mother-in-law doesn't know how to make it up to him for what her daughter has done. Jin-goo suggests something dangerous...

Ji-suk, a wealthy mother, wants to send her son, Se-hyuk, to the medical school. While looking for a competent private education coordination, Although it succeeded in recruiting a high-ranking entrance exam coordinator,'Starring', which only a few elite students selected. After hearing the rumors,'Namjae,' the father of Euntae, a high school examinee next door, hears rumors and comes to contact the main character. Like this, the parents of Se-hyeok and Eun-tae's neighbors 'Starring', who was in a difficult situation after entering a strange competition Eventually, I would share the day of the week to go to both houses to teach Se-hyuk and Eun-tae. Although they will agree with the two families, Eun Tae, who is a senior high school student, is in medical school. Not interested and only busy with high school girlfriends Se-hyuk starts talking to a beautiful tutor, starring than the entrance exam.

Young Mother 3 tells the story of a young man who begins a forbidden relationship with his stepmother, leading to a scandalous love affair that threatens to tear his family apart.