Seven girls become good friends in high school, then events pull them apart for 25 years. When one of the friends lies dying in a hospital, she wishes to see each of them one last time.

When Jo Gang-Ja attended high school, she was notorious for fighting. She gave birth to her daughter A-Ran in her late teens and became more responsible. Her daughter A-Ran is now a high school student, but A-Ran is bullied at school. Jo Gang-Ja decides to go back to high school to protect her daughter. Jo Gang-Ja becomes a high school student again.

Released after being wrongfully convicted and imprisoned for 13 years, a woman begins executing her elaborate plan of retribution.

An idle part-time college lecturer is annoyed by the yapping sound of a nearby dog. He decides to take drastic action.

A story of young people who make their start in the Dongdaemun market and try to succeed as world-class designers.