Damien Thorne and Chloe Vance, who grew up in an orphanage, were childhood sweethearts. Chloe Vance entered a wealthy family after being adopted by the Vance family. When Chloe Vance grew up, she found Damien Thorne and had him marry into the Vance family and marry her. Because of his status as a son-in-law, Damien Thorne was repeatedly ostracized, so he resolutely went north to join the army, and after seven years of war, he became the King of Dongshan. However, due to serious injuries in the final battle, he lost his memory of the seven years he spent in the army, and only remembered that he was still the "useless son-in-law" before joining the army.