Little Sapling is a fig tree. He and his good friend Brother Sparrow set up a detective agency. Little Sapling is clever and wise, while Brother Sparrow is lively and adorable. Together, they help plants and animals solve all kinds of problems in the jungle. They meet unusual creatures like the giant water lily, dodder, and the suicide tree, and help the saguaro, Uncle Sugar Maple, a little monkey, and others. They also visit a human city, where they meet a pair of twin siblings. As they solve cases, the two friends gain knowledge, grow, and are moved by what they experience.
Theme: Understand the world and grow as a person.
