Broke, homeless, and desperate to stay at her dream university, Lila Bennett clashes with Kieran Cross, only to discover that he is her new substitute professor. After Kieran publicly reads an intimate page from her folder and removes her from class, Lila also loses her home and her friend's support. A suspiciously cheap rental ad leads her to Kieran's luxury apartment. To regain her student status and secure a place to live, she signs a private servant contract with strict rules of secrecy and obedience. Their humiliating power struggle begins to shift when a hidden attacker fires an arrow into the apartment and Kieran is wounded protecting her. A warning attached to the weapon suggests that the professor is not who he claims to be.