The rainy season is coming. In order to avoid landslides, Big Bear (voiced by Zhang Wei) led the animals to reinforce the dam. However, the animals were not very attentive to this. Some were lazy and some escaped, which made Big Bear very angry. In an accident, a mudslide hit Big Bear and he was washed away. When he woke up, he found himself in a circus. Big Bear used his strength to obtain the qualification to perform in the circus and soon became a popular animal star. As time went by, Big Bear, who was overwhelmed by fame and honor, gradually forgot the idea of returning to the forest. He and the circus leader, the chimpanzee, also developed a heart-to-heart friendship. Second Bear (voiced by Zhang Bingjun) found Big Bear and hoped that Big Bear could go home with him because the animals in the forest disappeared mysteriously one after another. However, Big Bear rejected Second Bear's request and continued to dream of being a star.