Modern teenager Xiao Chen travels through the fantasy world and activates the waste-to-treasure system, which can recycle all scraps, corpses, and damaged magic weapons to exchange for points, repair and upgrade everything. At the beginning, he rescued Medusa Caiyan from the dying Celestial Realm and concluded a master-servant contract. Along the way, he recovered the scrapped sword and killed enemies to exchange for resources. He repaired and improved himself and Medusa, subdued the Saint of Qingqiu and the girls of Wanhua Clan, crushed the villains of Zhennan King, Fenyan Valley, and Taiyi Sword Sect, resisted the invasion of the Nine Heavenly Demons, and guarded the Canglan Realm with the peak combat power of the Celestials, making a ten-year pact to defeat the demons.
