Li Jinshui was originally an ordinary young man with no ideals, timid and just getting by. In order to raise medical expenses for his seriously ill mother, he went to a foreign country to work, but by mistake he exchanged identities with Jin Jiji, the youngest son of the local largest family, the Jin family. Unexpectedly, at this time, Jin's father was seriously ill, and the eldest brother of the Jin family made things difficult for his younger brother in order to compete for the family inheritance, and even murdered him. Li Jinshui fell into crisis again and again, but fortunately with the help of the policeman Lao Pu, he was able to escape danger. Since then, Li Jinshui and Lao Pu have forged a deep friendship. At the same time, the Dongxun family, which is hostile to the Jin family, also coveted the opportunity to embezzle the Jin family's business. Li Jinshui and Dongxun's overbearing daughter Shanxi did not fight and did not make a deal. From disliking each other to helping each other, in the fight between the two families, Li Jinshui and Shanxi broke through many obstacles, and finally felt each other's true feelings and developed into lovers. Having gained friendship and love, Li Jinshui truly understood the meaning of "people are brave because of their responsibilities". In order not to disappoint Shanxi's expectations of him and Lao Pu's trust in him, Li Jinshui disregarded his personal safety and bravely helped Lao Pu collect evidence of the crime of Jin's eldest brother and bring the bad guy to justice, but he fell under the bad guy's calculations.