After an accident, Gu Linchuan and Mu Siyao sleep together under the influence of drugs, unaware of each other's identities. A month later, when Mu Siyao becomes pregnant, her adoptive family pressures her to have an abortion, but she resolves to raise the child alone. While looking for work, she runs into Gu Linchuan again. Once he learns the truth, he proposes a marriage of convenience. After the wedding, Mu Siyao is repeatedly harassed by her adoptive sister and Liu Ruyan, Gu Linchuan's longtime crush. As he protects her and they weather misunderstandings, Gu Linchuan gradually falls for her. When the mystery of her background is finally solved, Mu Siyao turns out to be the heiress of the Shen family. In the end, she and Gu Linchuan join forces to bankrupt their enemies, welcome triplets, and find happiness.
