A simple girl who have a dark past,live independantly because she is scared to trust someone.Her name is Min Hye-In but also known as Shin Soo Ri,she was 14 years old when her parents killed by the unknown gang wearing a black suit she even have a older brother who is 8 years older than her.She thought that he is also killed but didn't know that he become a powerfull Mafia in Korea. She have a boyfriend in the 4th year of High School who named Park Jimin,they become so sweet when something happend.Before they met each other.Hye-In have a bestfriend named Lee Jihee,they are so close like siblings.Then one day she change and start avoiding Hye-In because of jealousy,she also inlove with Jimin but Jimin falls inlove with Hye-In.That day she always say lies about her and thats the reason of their broke up. Two years past and Hye-In is now a Collage student,she bumped into a familiar man when she's going to the University,and that man is her older brother Min Yoongi.Yoongi take Hye-In and her bestfriend with him and train them to be part of the Mafia. Park Jimin is also part of his Mafia gang and he want her to get revenge on him,but what if she still love him and Jimin have the same feelings and want to fix the broken heart of her. Do Yoongi will accept him? Do Jimin really change and want to start again with her? Do Hye-In give him a chance? And Will they find the killer of their parents? Read to find out