A domestic white goose from Northeast China is about to be stewed in an iron pot when he transmigrates to a world of demonic beasts, bound to the Primal Devour Evolution System. He forms an unexpected bond with Vera the Ancient Phoenix, who is being hunted by Kael the flood dragon. One year later, Vera gives birth to a pureblood young phoenix chick and a dual-blooded young yellow goose. The white goose disguises himself as an ordinary farm goose while secretly cultivating his power, protecting his wife and children as they flee from the Ancient Wildwood to Demon's Rest Town. To cure the sick young yellow goose, he ventures into the Primal Beast Domain in the Frostspine Tundra, evolves into Gus: Primordial Roc Form, teams up with Vera to slay Commander Kael the flood dragon, obtains the All-Spirit Fruit to cure his daughter, gives up the chance to take human form, and the family of four retreats to live a stable, happy life.
