In a spacetime called the Second Female Lead System, agent Su Lüxia is one of the most cunning and capable. Her job includes leaping into the different dimensions of romance stories—novels, dramas, or even otome games—and reversing the fates of unfortunate second female leads. As the expendable women grow full of resentment for the male leads and their deceitful mistresses, Su Lüxia takes over their bodies and mercilessly plots to exact a perfect revenge. Whether it be a harem in ancient China, a modern-day entertainment scandal, or a tricky fantasy world, Su Lüxia will make sure that the cheating men and evil women get exactly what they deserve—every single time.