Evelyn, an engineer, faces a nightmare when her daughter Leah is falsely accused of sexual assault by Caleb, the heir of Warren Group, and sentenced to execution in seven days. Desperate to save Leah, Evelyn commits a crime on purpose to get herself locked up in Blackwater Women’s Prison. Relying on the prison blueprint tattooed on her skin, she teams up with inmate Rosa and cleaner Nina to hatch an escape plan. The group braves countless deadly obstacles as they carry out their risky breakout. Evelyn stays behind to hold off the guards and cover her companions’ escape. Leah manages to get the incriminating evidence out into the open, exposing the dark conspiracy. In the end, the villain is arrested, and the mother and daughter gain hope for a judicial retrial.