Han Yi-soo is a man who suffers a tragic family history due to the greed of the Gaya Hotel Group. After his father is murdered and he is presumed dead following a staged accident, he undergoes a life-altering transformation. Years later, he returns to Korea under a new identity, orchestrating a meticulous and cold-blooded plan of revenge against those who destroyed his family. As he executes his scheme, he crosses paths with Jo Hae-woo, his childhood sweetheart who is now a prosecutor and the daughter of the very man responsible for his family's downfall. Caught between his burning desire for vengeance and his lingering love for Hae-woo, Yi-soo must navigate a dangerous game of deception where the truth threatens to destroy everyone involved. The series explores themes of fate, sacrifice, and the tragic consequences of seeking retribution.