A domestic white goose from Northeast China escapes being stewed and transmigrates to a monster realm, binding the Beast Devour Evolution System. He befriends an ancient Vermilion Bird chased by a flood dragon. A year later, the Vermilion Bird gives birth to a pure-blood phoenix chick and a little yellow goose with mixed blood. Hiding his strength, the goose protects his family and flees to a demon town. He ventures into the frigid northern secret realm to heal the chick and evolves into the Jiuyou Primordial Peng Goose. Together with the Vermilion Bird, they slay the dragon commander and get the Spirit Fruit to cure their child. He gives up human transformation, and the four live in seclusion happily.