There are a  girl  that is being adored in her high school. But one thing  people don't know about her is her relationships with a Gangster.

The truth soon would be found out.

Later, a new transfer student came in. Reunite with his old friends. He coincidentally meet the girl and start to fallen for her.

Can he get the girl's attention or would it be a happy ending for the Gangster couple?

"Our relationship won't get ruined just because of that boy, I'm not gonna let you go. Never." - Bang Yongguk

"He just my friend oppa!, He always help me when you are not around. Please just trust me." - Ham Eunjung

"Don't worry, I'll always protect you. I won't leave you." - Kim Jongin