This world classic bridge book series are translated for advance readers. Although Costilla is a crippled orphan, he has always had a dream of traveling around the world. The magical forest spirit promises to help him realize the dream on the condition that he can't stay for three days at the same place. Costilla walks ceaselessly and is constantly helping people on the way. People always try to persuade him to stay, but he always remembers the rule, until he comes across a lovely girl. In order to rescue the girl and her village, he must build a dam in the rain, which takes him more than three days.
科斯提亚是一个身有残疾的孤儿。他的双腿有病，因此他无法走出自己的屋子。尽管他的左邻右舍都帮助他，但是科斯提亚并不感到幸福，他梦想自己有一天能够周游世界。一天，一个神奇的人物出现在他的生活里，并且承诺会帮助他梦想成真，条件是他永远都不能在同一个地方连续停留超过三天……
