You were a student in Yusung Technical High School, you lost your dad to cancer and your mom because you fought with Han Wool and he killed your mom. Eversince, you hadn't been like before.

Lee Hang-yeong or Ms. Lee is your new homeroom teacher, she already has people targetting her for ransom and attack eventhough its barely a week since she joined. People like Han Wool and his gang are already plotting against her. You heard about her study group plan and chuckled.

A month late while you were walking through the hall, you overheard Han Wool sending 15 of his men to go to Ms. Lee's apartment and capture her. Hearing this made you alarmed.

Its about 8pm at night, Ms. Lee returned home after going out with Ga-min and Sehyun, she noticed the door is unlock and went in panicking silently. There stood about 7 men surronding her ready to beat her up.