Wren Sterling transmigrates into a modern-day heiress of the Sterling Group. She accepts Lord Hawthorne's request to marry Soren Hawthorne, a notorious playboy. On their wedding night, she finds her fiancé shares the name and appearance of the regent who died for her in her past life. Faced with him, she lays down ground rules to tame him. Soren falls for her and recovers his past life memories. They join forces to take revenge, rekindle their past-life romance, and embark on a happy life.