Modern youth Chen Kai unexpectedly enters an ancestral sandbox world, becoming the heir apparent Prince Chen of Great Xia. Facing framed plots by powerful officials, floods, Rong-Di invasions, and demon calamities, he relies on his dual-world shuttle ability to transform real-world items into "divine artifacts", breaking through deadlocks dimensionally time and again. From a prodigal heir growing into the nation-stabilizing Prince Regent, he ultimately gathers the world's love and goodwill, slays the blood demon Shen Hu, pacifies the turbulent times, and guards Great Xia and his loved ones.