In order to save his mother from illness, Lin Shen, a financial genius, entered into the Su family of the "Jishitang" family, a century-old traditional Chinese medicine family, and became the contract husband of Su Mingwei, Su's eldest daughter. The seemingly glamorous life of a son-in-law hides hidden dangers: family members are ostracized, the battle for the heir to a traditional Chinese medicine company, and ex-girlfriend entanglements. Lin Shen discovered that the Su family's proud formula of "Angong Niuhuang Pill" had a fatal flaw, and when he secretly improved it, he was framed as a commercial espionage.