Su Qingwan, the legitimate daughter of the Minister of Imperial Sacrifices' household, commands immense wealth but falls victim to her stepmother's schemes and her fiancé's betrayal. To protect the dowry left by her birth mother, she decisively tears up the marriage contract and spends a fortune on the black market to buy a stunningly handsome vagrant known as A Jing to become her live-in husband and turn the tables. With her fake husband by her side, Su Qingwan fiercely protects her inheritance and humiliates the scoundrel and her wicked stepmother at a family banquet. Yet she gradually discovers that this son-in-law, who claims his family has fallen into ruin, possesses astonishing martial prowess and can write wild cursive calligraphy that outshines even the great scholars of the imperial court. When a clothing-shop owner sees the jade pendant he secretly reveals and drops to his knees in terror, Su Qingwan realizes that the man she bought with her money has an extraordinary identity.