Centered on the complicated relationship between dancer Li Sitong and Fu Yanzhou, this story exposes years of revenge and deception. At the hospital, Li Sitong donates blood to Fu Yanzhou, who has been seriously injured, only to discover that he and her close friend Ji Mubai have been conspiring to fake his illness. Through flashbacks, the truth behind Fu Yanzhou's prolonged and systematic deception is gradually revealed, from his false promises involving an engagement ring to his plan to use Li Sitong's sincere love as part of a 99-step revenge scheme.