A sex video is filmed without consent at a birthday party, and Ren Li-cha is the girl in the video. As a result of the clip spreading among the students, Li-cha is mocked and bullied. Wu Yun-heng, a transfer student, joined Li-cha at the party. She can't stand how much Li-cha is suffering, so she's determined to find out what happened and fight for her best friend. However, as she gets closer to the truth, she is about to upend the school's peace.....