Six years later, on her first day moving into her stepfather’s mansion, Lucy runs into her first love who abandoned her without a word in high school. Standing at the luxurious doorway, she hopes for a new life, until Aiden walks down the stairs. Staring at her with unforgettable eyes, he sneers, "Long time no see, my dear stepsister." She soon realizes fate cruelly toys with her. At the family dinner, while their parents cheerfully plan the future, Aiden teases her under the table. Panicked, Lucy flees to her room, only to find him already there with the door locked. Pushing her against the door, he aggressively questions her sudden departure years ago. Their tense moment is interrupted by approaching footsteps. Charlotte, the blonde beauty, walks in and clings to Aiden, glancing at Lucy with disdain. "Is this the unwanted stepsister?" Under the same roof, he forces her to confront the past, while another woman reminds her of her place. Trapped in this dangerous game, she has nowhere to escape.
