Sunho falls off the school building. Sunho's parents are devastated to see their boy unconscious in the hospital. Meanwhile, Sunho's friends secretly delete a video playing the "Avengers Game" on their phones before meeting with the detective on Sunho's case.

Moojin and Inha are in shock after hearing that Sunho is not a victim but an assailant. Meanwhile, Eunjoo is tormented by the unspeakable truth and can't help but suspect her son. She asks him about the lipstick she found in his room but Joonsuk evades the question.