In a twist of fate, Emma Thompson, a quiet and unassuming foster daughter in the Kim family, finds herself married into the powerful Lee family. After three years of a loveless marriage, she plans to leave once their agreement expires. However, a single night of passion upends her plans. Trapped between the wall and her husband, Ethan Lee, Emma quivers, questioning his sanity. As the night unfolds, old secrets resurface, and Emma must navigate the treacherous waters of her marriage and the Lee family's dark secrets.