13-year-old Myoui Mina, miraculously survives an accident that kills her mother. Reeling from a heartbreakingly painful loss, Mina sees no other option but to retreat into herself. Scarred by the accident, disturbed by schoolmates who don’t know how to deal with her, and tormented above all else by her longing for her mother, she clings to the one thing that seems to be able to shield her from the chaos: her mask. 

Six years ago, Son Chae Young was the girl who had everything. That is, until the incident that took her mother away from her. The accident was the turning point in her life, tearing her world apart and taking from her the comfortable life she’d known. Then, motherless and neglected, Chaeyoung was forced to leave the innocent girl she’d been behind. Becoming the ruthless “it girl” she believed was what the world wanted from her.