Choi Youngmi, a hard-working waitress at a club where maniacs, gang members, and ill-mannered people went to. She had no choice but to work at such a skimpy place due to lack of education and experiences. It was the only place that welcomed her when she applied for a job when she was twenty, now twenty-three. She fends for herself, yet being a waitress at a club wasn't enough to feed her or shelter her, so at the day, she works at a library and by night, she works at a club. 

Living alone at a shabby rooftop apartment for the past three years was enough for her. There were no luxuries such as expensive cars, expensive furniture, designer bags or clothes. She was content with what she had; however, her life would feel complete if her younger brother hadn't ran away from the orphanage when she was sixteen and when he was ten. 

She tried looking for him, but couldn't. She looked at the park he used to go at, she looked under his bed, she looked inside the orphanage bathroom, she looked at the orphanage backyard, but he was nowhere to be found. It was like playing a good seven-year hide and seek with your little brother who had mad skills in hiding. It was no use. No matter how hard she tried, she could not find him anywhere. 

But what if that one person is the connection to reach her younger brother? 

What if she learned about her brother co-existing with one of the most influential gangs? 

What if she falls in love to that one guy who kept on being her superman and to that one guy her brother treated as his own big brother?