Eleven was originally an elite special forces soldier. He was framed during a border mission and was expelled from the military for "escape from battle." In the ruins, he accidentally concluded a soul contract with the dying shadow wolf cub "Xiao Hei", and awakened the "Beast Contract" system that can share abilities with any alien beast. In order to make a living, he entered the Huanyu Biology Company anonymously, but started at the bottom of the exotic animal feces processing team. Within the company, he encountered bullying from colleagues and suppression from his boss, but gradually rose to the top with his wisdom and abilities. During this period, he rescued and contracted the S-class beast Thunder Hell Jiao, and was promoted as a trainer by Vice President Su Li. As the plot progresses, Eleven discovers that someone within the company colludes with the demonic forces and uses Gu insects to control alien beasts, and all of this is actually related to the military mole who framed him back then. With the help of data analyst Bai Lu (actually a member of the "Watcher" organization that fights monsters), Eleven fights enemies inside and outside the company while pursuing the truth about being framed, and gradually grows into an existence that shakes the entire world of alien beasts and monsters.
