In the early Cretaceous, in what is now Liaoning, China, the evolution of dinosaurs underwent a revolutionary change. A feathered dinosaur flew into the blue sky and successfully expanded its habitat. The novel tells the story of a little Microraptor named Gao Yuan, who was expelled from home by his father because of the death of his mother at birth. He experienced the process from inferiority to confidence, from anonymity to becoming the king of the family of Microraptors, but then losing everything due to his self conciet. Eventually, Gao Yuan forgave his father, made up with his old self, and found the most beautiful friendship with a little Microraptor named Xiao Ai.