Mimi Kiguchi is friends with every cat on her street, including a pretty orange kitten she calls the Ginger Princess. Mimi is horrified when the neighborhood bully kidnaps the Ginger Princess for what he darkly calls "an experiment." But what can a small nine-year-old do against a big, tough, eleven-year-old like Ricky? Then Mimi gets an idea that just might work . . .