The Rescue Rangers are going on a mission to retrieve a missing kitten for a girl named Mandy. As Gadget goes on ahead to scout the area and Monterey Jack is sent to investigate sightings of strange mechanical dogs with Zipper, Chip and Dale proceed through the streets and into a laboratory, where they are attacked by a crazed robot. After defeating the robot, Fat Cat appears and reveals that "Mandy's kitten" was just a distraction so he could kidnap Gadget and force her to work for him. Fortunately, Gadget is able to contact Chip and Dale by building a wireless phone and sending a map to them via carrier pigeon, allowing them to navigate through the treacherous landscape and reach Fat Cat's casino where she is being held. After rescuing her, Gadget provides the chipmunks with a rocket that sends them towards Fat Cat's hideout so they can defeat him.