District Court Judge Alicja Mazur is renowned for her strictness towards criminals. She is a successful woman with a flourishing career and happy family life. Unexpectedly, she is accused of a murder she did not commit and sentenced to 15 years in prison. She must survive in the prison among the women she has previously sentenced. Battling the brutal reality of prison life, she simultaneously strives to prove her innocence and ensure the safety of her daughter, Hanka.