Yun Nian was maliciously exchanged by a nanny when he was a child and grew up in an ordinary family; eighteen years later, he was found by his biological parents, but was ignored because of the instigation of the fake daughter Yun Qing; Yun Qing drugged Yun Nian to stun her on the eve of the wedding in order to avoid marriage with Xi Mochen, the president of the Xi family, and sent her into the wedding car; When a servant makes things difficult for her and her mother-in-law dislikes her, she endures it silently and secretly collects evidence; Xi Mochen regards her as a vase at first, but after witnessing her precise business analysis skills in a board meeting, she begins to take a second look; Yun Nian discovers that Xi Mochen suffers from severe insomnia, which she unexpectedly relieves with a cup of hot milk, and the relationship between the two subtly breaks; the fake daughter Yunqing pretends to visit, but actually steals Xi Mochen's confidential documents to put the blame on Yun Xi Mochen discovered Yun Qing's plot after investigation and stood up for Yun Nian for the first time; Yun Nian found an old photo in Xi Mochen's study, which overlapped with his childhood memories, suggesting that the two families had a long history; When her biological mother suddenly became seriously ill, she asked Xi Mochen for help, and Xi Mochen used family resources for treatment; the fake daughter teamed up with outsiders to set up a trap to destroy Yun Nian's reputation, and Xi Mochen stepped forward at the critical moment; Yun Nian finally obtained complete evidence, revealing the truth about the subcontracting twenty years ago, and also investigated the clues to the disappearance of Yun Nian's father; the two worked together to destroy the villain, Yun Nian regained the recognition of the family, and Xi Mochen let go of his heart.
