Divorced mother Yoo Rim (Yoo Seon) lives with her teenaged daughter Eun Ah (Nam Bo-Ra), that is having a tough time at her new school. She has a crush on classmate Jo Han (U-Kiss's Shin Dong Ho), but he works out to be diverse from what she's expected. His friends and he rape her after which endanger her with a videotape of the attack. Eun Ah takes her own life, devastated and leaving Yoo Rim alone. Since minors, his friends and Jo Han really are allowed off with light punishments. Yoo Rim takes things into her hand to have revenge for her daughter.