Modern teenager Liu Feng transmigrates into a young dragon and activates the Eat-to-Evolve System, allowing him to devour magical beasts and level up at an astonishing pace. He first turns the tables on a Green Snake and outsmarts a Grizzly Bear, but is then forced to sign an exploited-labor contract with Luo Hansu, a cultivator at the Divine Transformation Realm. Little does he know that behind Luo Hansu's strict demands lies the only hope of tempering him to withstand the demonic tide from beyond the realms. When the Shadow Otherworldly Race sweeps across the heavens and earth, Liu Feng transforms from an exploited workhorse into a true guardian. Together with Luo Hansu, he unlocks their fated symbiotic bond, eventually devours the Shadow Commander, ascends to become the Supreme Beast God, and flies toward the vast sea of stars with the proud and aloof Saintess.