云女士自 17 年前与丈夫离婚后，便独自抚养女儿。他们离婚是因为丈夫的一夜情。当她的前夫重新出现在她的生活中时，云女士坚强的意志、自信以及对是非的明确信念开始瓦解。

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.

Dong Do is an ordinary high school student who likes movies. He begins to hang around his classmate, tough Hyun Seung and his bullying clique. Cigarettes and harsh words belched out of their mouths attract him, and Dong Do thinks they are cool and wants to be like them.