In a New York elite filled with luxury, intrigue, and a touch of wickedness, two manipulative step-siblings, Sebastian and Kathryn, dive into a dangerous game of seduction and revenge. Sebastian, a charming and promiscuous young man, faces a new challenge: to seduce the innocent Annette, a new student who has just arrived at their exclusive school. Annette is the daughter of the new headmaster, and unlike most of her peers, she holds firm ideals and beliefs, making her the perfect target for Sebastian's machinations.
Kathryn, Sebastian's sister, has her own agenda. For a long time, she has been looking for a way to make her brother suffer and decides to use his new target as a pawn in her own game. At first, Sebastian enjoys the challenge and is drawn to Annette's purity, but as he delves deeper into her life, he begins to question his own intentions.
Tension escalates as true emotions develop and dark secrets emerge. The lines between love, revenge, and loyalty blur, and every decision comes with its consequences. What began as a simple game of seduction transforms into an intense emotional battle where no one is safe. Will Sebastian fulfill his bet, or will he truly learn to love in the process? Cruelty has never been so seductive.