Ashley, Brianna, Jade, Kayla and Lexi are five teenagers who must navigate the complexities of pregnancy and becoming young mothers.

A middle-aged man who lives with his song marries a sexy, young Korean-American woman. The son finds his father uncomfortable, but is drawn to his new step-mother.

Every day, Jung-woo goes to a friend's house. In fact, he fell in love with Hyunsoo's mother, Hyunsook. Jin-soo and his lover Nam-joo have to go to a love hotel to have sex in order to live in their parents' homes, and the two people, who are starting to pay the hotel bill, ask Jung-woo to borrow a room for a while. Jung-woo is in Jin-su's room while the two enjoy sex in her room. Hyun-sook and Jung-woo, who are both under one roof, imagine this and that, and Hyun-sook, who notices their situation, tells Jung-woo that he will go to clean the room. Hyunsuk came to Jungwoo's room a few days later. I can see the gesture of temptation as she cleans.

Yeong-bin can’t get a job and his father, Jin-il, thinks he’s incompetent. Yeong-bin is seeing Min-jeong, the florist, but she feels distant from Yeong-bin, who dreams of going to Seoul one day. One day, Jin-il brings home Ye-won, whom he is going to get remarried with, and Yeong-bin is furious, because she is his ex-girlfriend who abandoned him. However, they find out there was a misunderstanding to their break-up and they develop feelings for each other once again. Meanwhile, Min-jeong feels more attracted to Jin-il, because he’s more dependable.

Won-jin is unemployed and spends most of his time pleasuring himself and dreaming after Seon-mi. One day, his father brings home a very young wife who will be Won-jin's step-mother, and he hopes she'll be the woman of his dreams.

Ji-seok, who raised her daughter Yoon-jeong by herself has had troubles that she cannot talk about. He's just looking to tell his daughter that he has a woman to marry. Since the bride-to-be Soo-jin is of the same age as her daughter, Yoon-jeong is afraid of opposition and cannot speak. Ji-seok finally asks for help from his daughter's boyfriend, Seok-joo, who came to play at home...

A young lesbian kidnaps the child she nannies to try to satisfy her girlfriend's desire for domesticity.

Teen Mom: Young Moms Club follows Heather, Chandlar, Nikki, Nicole, Alyssa and Cheyenne, a tight-knit group of childhood friends from San Diego. With a lot on their plates -- from young motherhood to romance and so much more -- these women will try to navigate everything the only way they know how: together.

Chronicling diverse stories and backgrounds of young pregnant teen women and the challenges they face in their first years of being mothers.

The 12th movie of the series.