Serena transmigrated into the body of an heiress afflicted with congenital heart disease and intermittent rage disorder. Before even completing high school, she was sent abroad for specialized medical treatment. It isn't until she binds with a mysterious System that she discovers her world is actually a high-society academy web novel. In the original story, a scholarship student gets tangled in a web of love and hate with the four male leads, eventually reaching a happy ending. Serena herself is merely a background figure—the classic "white moonlight" first love of the main male lead, bound by a childhood arrangement meant to culminate in marriage. However, the male lead, initially obsessed with his sickly first love, slowly finds himself drawn to the scholarship girl’s resilient spirit. After a series of dramatic love triangles, the white moonlight loses her place, ending her own life in desperation. Would I really kill myself over a man whose name I can barely remember? Serena finds the premise completely absurd. Yet the System confirms it: not only is it true, but the world has already collapsed once because the main couple failed to reach their happy ending. The System offers Serena a contract: mediate between the leads, protect the heroine, and ensure their romance succeeds. In return, she will be granted a perfectly healthy body. Returning home ahead of schedule, Serena decides to take initiative before the plot unfolds. She will leverage the male lead, build a close bond with the scholarship heroine, and clear every obstacle in their path—whatever it takes.