Jessica is initially excited to move back home and catch up with her mother after college, but she is shocked to discover that her mother has a new boyfriend named Paul who is moving in with them. Paul seems charming at first, but Jessica begins to notice that something is off about him. She sees him arguing with another woman in a parking lot and becomes suspicious.
Jessica confides in Sandra and Hal, her mother's best friend and Sandra's husband, who both agree that Paul's behavior is suspicious. Jessica starts to investigate Paul's past and discovers that he has a criminal record and his real name is not Paul at all. She also learns that he has a history of dating wealthy women and then stealing from them.
As Jessica gathers evidence against Paul, he becomes increasingly hostile and tries to turn Tracy against her own daughter. Jessica begins to fear for her safety and that of her mother. With the help of Sandra and Hal, she builds a case against Paul and presents her findings to Tracy and the police. Paul is ultimately arrested and Jessica's mother realizes the truth about him.
In the end, Jessica and Tracy reconcile and Jessica finds a new appreciation for her mother's strength and resilience. She also learns the importance of trusting her instincts and standing up for herself and her loved ones.