The mischievous girl, Ling Miao Miao, accidentally enters the mission system of the novel Monster Hunting and becomes a villainous supporting character. To return to the real world, she must complete the system's task—winning over the mysterious and twisted young man, Mu Sheng. Along the way, they team up with Mu Yao, a member of a monster-hunting family, and Liu Fu Yi, a monster hunter. Together, they fight monsters and level up. As the missions progress, they gradually resolve the animosity between humans and monsters, rewrite the fated ending, and save the world.