Clarice Bean needs a science project or she's in BIG trouble. Her brother Kurt just wants to save the planet. Now they're both up a tree. Clarice Bean is learning about planet Earth at school. She needs to think of a project on the environment, but her mind is a blank. Then she discovers that a big neighborhood tree is about to be chopped to pieces, so she decides to become an eco-warrior. Clarice joins her quirky family in the tree and saves the day, and ends up saving the planet too.