After overhearing the inner thoughts of the transmigrator and the system, Tsitsi Yang realizes that she is just the cannon-fodder supporting character in a novel, while her boyfriend Evan Payne is actually the male lead. Learning that the transmigrator's goal is to win over the male lead, Tsitsi takes the initiative to break up. Unexpectedly, Evan's condition explodes—he tears off his disguise and reverts to his true self, the paranoid yandere villain. It turns out the seemingly harmless Tsitsi Yang is actually the real one in control of this relationship. Step by step, she tames him, only to make sure that in Evan Payne's life, she is the one and only.
