"It was spring in New Mouse City. I love to celebrate the season with my fellow mice by exchanging chocolate eggs and competing in a confectionary challenge. This year, there was also a special exhibition of priceless jeweled Mousebergé eggs in town. Then one of the Mousebergé eggs was stolen--and it was up to me to find it"--Amazon.com.

While celebrating his birthday with his family, Geronimo realizes someone has replaced all of his money with counterfeit bills and sets out to find the thieves.