To secure a multi-million contract with Fengzhan Group, the second branch of the Lin family forces their daughter Lin Qiaoyin to marry Qin Yi, a rumored penniless live-in son-in-law, in place of her cousin Lin Qianyu. His true identity is revealed on their wedding night. Instead of resenting her, Qin Yi solemnly vows to protect her for life. Everyone mocks his poverty, unaware he is heir to a reclusive medical-martial clan. With a black card, he buys the store’s flagship jewelry; one phone call reshapes the big contract; his silver needle saves a dying patient. From a mocked son-in-law, he becomes a renowned mysterious healer in Fengcheng. With kindness and strength, Qin Yi breaks through troubles and helps his wife rise against all odds.
