A girl named Sohee was Sehun best friend in a wealthy high school.She was the only girl Sehun had a friend as.In senior year of high school she suddenly disappeared and never came back to school.Which made Sehun curious because she didn't tell him that she would be leaving he didn't know where she went.She was in a car accident with her parents,she made it alive but didn't remember her past or anything  her parents died so she lived with her aunt.She continued at a different school, got into