In the wake of personal tragedy, Grace's life takes an unexpected turn when Jasper Montgomery—the man she’s loathed for years—and his family moves into her home. Jasper’s presence isn’t just a disruption; it’s a painful reminder of the complicated history between their families. Not to mention he's about to become her step-brother. To stop their parents from marrying they decide create a fake relationship in hope that it will deter their parents.