The heroine Lin Qinghan's grandfather is in danger. In order to compete for the family property, a group of relatives, regardless of the safety of the Lin Group, use all kinds of despicable means to frame the female president Lin Qinghan. However, these crises are resolved one by one by Zhang Xuan, the son-in-law who comes to repay his gratitude. Outsiders sneer at Zhang Xuan as a man who only knows how to do housework, but Zhang Xuan doesn't care. He just needs to take care of his wife, and everything else is "small matter". The relatives in the family have been eyeing the Lin family's industry, secretly colluding with competitors to launch attacks on Lin Qinghan and the company again and again. All of this cannot escape Zhang Xuan's eyes, and every time a crisis is averted, Lin Qinghan feels that her husband is definitely not a useless weakling. Slowly, Lin Qinghan finally discovered that Zhang Xuan is the real boss...