Luce has just joined Sword & Cross High School, a highly monitored establishment for young delinquents because she is believed to be responsible for a crime she did not commit. There, she meets the dark Daniel, who attracts her from their first meeting. In this sinister place where cell phones are forbidden, where students drag a heavy past behind them and where cameras monitor their every move, Daniel becomes an obsession. But the young man avoids Luce, who is also courted by Cam, a handsome brunette with green eyes.
Despite her fascination with Daniel, Luce cannot resist Cam. This dilemma disturbs the young girl who is already destabilized by the incessant presence of shadows, which have pursued and worried her since childhood. Everything is designed to ensure order reigns at Sword & Cross, yet this place will become the scene of disturbing and mysterious dramas…
As the two fight, Cam reveals that he is not the one behind Luce’s murders. Meanwhile, Miss Sophia kills Penn. Luce screams, which brings Daniel to her aid and he protects her from Miss Sophia, who is revealed to be the one actually trying to kill Luce. Miss Sophia justifies her murders by explaining that with Luce gone, Daniel would have been forced to choose sides and order would have been restored. Shadows appear behind Miss Sophia as she speaks and consume her.
Daniel explains to a shaken Luce that her not being baptized would make her next death permanent. Miss Sophia believed that this would cause Daniel to choose heaven. He tells her that Lucifer will indeed come for her and that he must take her somewhere safe. They declare their love for each other as they leave to seek refuge with Lucifer.