During the beast-taming awakening ceremony, young Lin Xiu contracts a skeleton beast, the lowest-ranked creature of all. Despite facing ridicule and doubt from those around him, he refuses to lose heart. Using his unique cultivation methods, he takes his timid little skeleton on a journey of trials and evolution, unlocking multiple combat forms. Amid academy examinations and the crisis of an enemy invasion, he joins forces with his companions to fight off their foes and protect their homeland, growing from an ordinary boy into a top-tier beast tamer.