Chip and Dale are two chipmunks who start a detective agency, Rescue Rangers, along with their friends Gadget, Monterey Jack, and Zipper. The pint-sized detectives deal with crimes that are often "too small" for the police to handle, usually with other animals as their clients. The gang frequently find themselves going up against two particular arch-villains: Mafia-style tabby cat Fat Cat and mad scientist Norton Nimnul.