A young girl whose mind set was to kill the person who murdered her mother. That was her mission, that was her ultimate priority. She trained her hardest for this mission to be completed. Somewhere in between, she did something that she least expected..   To be falling in love with someone   Will this be a distraction and make her life worse or an inspiration and make her life better? 

I will never forget what I did, on that very day. How selfish I was then. Now that you're gone.. I regretted it..  

Chaejin had met a nurse in the hospital where Min mi was admitted to. He asked her out on a date and she agreed to it. Will the nurse fall for Chaejin or will she not? Will Chaejin have his heart brokened again?

Min Mi lives a not so normal teenage life. Not so normal as in being a gangster. She is the leader of Melody. Melody consisted of 5 members including Minmi. They go to school, go shopping, watch movies and do things normally. What's abnormal is that these 5 girls are the NO 1 BEST GROUP IN KOREA. Also in many more countries. Let's see how Minmi lives her life shall we?