A young girl is found dead inside a locked toilet stall at her school. The police is under heavy pressure to find the murderer, and a main suspect is arrested.

Zadorov retracts his confession, claiming he was coerced into it by using unjust means. A few months after his arrest, the trial begins.

The public won't accept the verdict. The suspicion shifts to teen classmates and rumors of a conspiracy spread.

6 years after the murder, a mysterious person comes forward with new information regarding the case...