Han Yi-soo is a man who hides his true identity and returns for vengeance against the family responsible for destroying his father, a tragedy that cost him his own youth and family. Disguised under a new persona as a successful businessman, he meticulously executes a dark plan. Standing in his way is Jo Hae-woo, a brilliant prosecutor and the granddaughter of the very man Yi-soo aims to destroy. Hae-woo is torn between her deep childhood feelings for Yi-soo and her duty to uncover the truth, leading both of them into a labyrinth of dangerous secrets, hidden agendas, and heartbreaking choices.