Liu Yuting, a romantic novel writer, is slightly fat and lazy. When she was looking for inspiration for her novel, she came across an article called "Fat Woman Heroine Also Has Spring" and complained that a 180-pound fat woman is not worthy of dating a handsome guy. As a result, she was punished by the mysterious system to become a fat woman heroine in the book. She can only return to her original world after completing the strategy task and being with the hero Mo Rufeng. At first, Liu Yuting just passively completed the task, but later, because she felt sorry for the experience of the original owner An Xueqing, she decided to torture the unfaithful man to avenge him.