The story of Bai Qian and Lu Tingxiao begins with an emergency rescue on a stormy night. Bai Qian, an intern doctor, fights to save Lu Tingxiao, heir to the Lu Group, after he is seriously injured in a car accident. But when Lu Tingxiao wakes up, he mistakes Bai Wei, the daughter of a family of doctors, for the person who saved his life, and gives her all his affection instead.
At the time, desperate to pay for her mother's dialysis, Bai Qian reluctantly accepts a surrogacy agreement from a mysterious employer. When she signs it, she discovers that the employer is Lu Tingxiao, and the agreement also requires her to keep her identity secret. As they are forced to live together, their feelings grow more complicated. Lu Tingxiao notices a butterfly-shaped birthmark on Bai Qian's back, and his feelings for her begin to take root. But Bai Wei fabricates medical records to cement her claim to be his savior, leading Lu Tingxiao to suspect Bai Qian has ulterior motives...
