In her previous life, the sickly wealthy adopted daughter Su Wanying (the heroine) was set up by her stepmother and stepsister. Not only did she kill Chu Qingci (the other heroine), the only disabled man who truly treated her, but she also died miserably. After being reborn and returning to before the tragedy, Su Wanying was bound to the "Save the Beautiful and Strong Miserable System". The mission goal was to save Bai Yueguang in her previous life - Chu Qingci, whose legs were disabled due to a car accident and was ostracized by her family.
The system requires her to gain enough favorability with Chu Qingci in order to obtain the health points needed to treat her congenital heart disease. On the surface, Su Wanying transforms into a weak and helpless little white flower who relies on Chu Qingci, and approaches her in the name of "repaying a favor". In fact, she is secretly strategizing, using the clues and skills provided by the system to dismantle her stepmother's conspiracy step by step, expose her stepsister's hypocritical mask, and trample the enemies from her previous life under her feet.
Chu Qingci, on the surface, appears to be a gloomy and indifferent abandoned child who is sympathized with by the world, but in fact, she is deeply scheming and has already secretly set up a dragnet to avenge the enemy who caused her disability. She was wary of Su Wanying's sudden approach, but she gradually fell into the paranoia and purity beneath her sickly appearance. She took this "little pitiful person" who seemed to need protection under her wing and became her only weakness.
In the process of testing and pushing each other to the limit, one plays the role of a "dodder" who needs to be saved, and the other plays the role of a "beautiful, strong and miserable" who needs to be warmed. In fact, they join forces to turn the business world upside down. In the end, when all the enemies were destroyed and Su Wanying thought the mission was completed, she discovered that Chu Qingci's disability had another hidden meaning. It was the only and most cherished "accident" in Chu Qingci's plan from beginning to end.