Peng is a carefree goose whose flock is migrating in China. His attitude and demeanor is disapproved by leader Bing, who he and his flock abandon while Peng is asleep. Meanwhile, Chi and Chao, a pair of ducklings on their way to a mystical place called Pleasant Valley, ends up being separated from their flock due to a careless stunt from Peng. To hide from a sinister cat named Banzou, they end up sleeping with Peng after they see him fending off Banzou. Surprised by their presence, Peng ends up recklessly flying away from them before he breaks his wing with a gong. Flightless and frightened, Peng decides to use the ducklings to fend himself off from predators, and return safely to his flock. The ducklings reluctantly agree to go with him.