一个独自住在树屋的小男孩，没有同伴。他戴上耳机，隔绝了尘世的喧嚣，为了离开寂寞的生活，他踏上了道路。在旅途中，他遇到了九个伙伴，他们都有各自的特点。故事的结尾，他们来到了旅程的终点，把钥匙凑在一起打开了宝箱。虽然宝箱里没有金银财宝，但小男孩知道他得到了世界上最珍贵的财宝。龙的9个儿子被明代诗人杨慎收藏的《盛安外集》所认识。首先是毕喜，它有一个巨大的外壳，能够携带重物。其次是赤文，它喜欢站在屋顶的支柱上观看。第三，pulao，它喜欢唱歌和叫喊。第四，边书，喜欢诉讼和辩论。第五，桃铁，它喜欢吃。第六，sonefu，它喜欢玩水。第七，雅兹，它喜欢打架。第八，金妮，喜欢知识。第九，交兔，一个喜欢守护的动物。

A little boy who live alone in the tree house, little boy has no company.He put on the headset, isolated the hustle and bustle of the world, in order to leave lonely life, he embarked on the road. In the journey, he meets nine partners, they have distinctive characteristics. At the end of the story, they came to the end of the journey, gathered their keys together to open the treasure box. Though the treasure box has no gold and silver, but the little boy knew that he got the most precious treasures in the world.The 9 sons of the dragon were recognized by the Sheng'an waiji collection by the Ming Dynasty poet Yang Shen. First, Bi xi, a creature with a large shell able to carry heavy objects.Second, chiwen, which likes to stand on ridgepoles of roofs to watch. Third, pulao, which likes to sing and shout. Fourth, bian, which likes to litigation and debate. Fifth, taotie, which likes to eat. Sixth, sonefu, which likes to dabble in water. Seventh, yazi, which likes to fight.Eighth, jinni, which likes knowledge. Ninth, jiaotu, a creature that likes to guard.