Selena, the heiress to a wealthy dynasty, discovers—just 100 days before her wedding—a forbidden affair between her fiancé and her best friend, alongside a plot to embezzle her family's assets. Biding her time, she secretly gathers evidence and forms a dangerous alliance with Caleb, her fiancé's business rival. Ultimately, Selena exposes the affair by revealing the incriminating footage at the wedding, personally shattering the facade of their sham romance.