Wang Wu determined to ride a bicycle across the country. Once, he got into Huang Tian's truck because of a flat tire. Then the two of them came to an island in a daze, and then made friends with the flying monkeys living on the island. One day they found a piece of gold jewelry and learned that there were still humans living in this strange world. While on the island, they got rid of the killer trees in the forest and then fought off the invaders for the flying monkeys. Finally, they planned to make a big raft and prepare to find those people. While crossing the sea, they encountered many strange sea creatures.