The female lead, Sang Wan, has been raised in the countryside by her grandmother and learned top-notch medical skills and hacking techniques from a mysterious master. She also self-taught herself the piano. When Sang Wan was 22 years old, the Sang family accidentally discovered that she was not biological and found their biological daughter Sang Tian. The Sang family company is facing a crisis, while the young master of the Bai family, Bai Jingchen, fell into a coma and became a vegetative state due to a car accident. Madame Bai calculated the Eight Characters of the daughter of the Sang family to complement her son, and in order to celebrate her son's love, she offered a sky high dowry to marry the daughter of the Sang family. The Sang couple accepted the betrothal gift, but were unwilling to let their biological daughter marry a vegetative state. Therefore, they threatened Sang Wan with the medical expenses of Grandma Sang and asked her to marry Bai Jingchen on behalf of Sang Tian. After the substitution marriage, the male lead discovered that the female lead was the one who caused him to fail three months ago. The female lead also discovered that the male lead was someone who had saved her. After marriage, the female lead began to save the male lead, and the male lead gradually got along with him