The Rescue Rangers spring into action when a young girl named Mandy reports a missing kitten, setting the team on what appears to be a straightforward rescue mission. As Gadget scouts ahead and Monterey Jack investigates mysterious mechanical canines with Zipper's help, Chip and Dale push deeper into a city laboratory only to face off against a rampaging automaton. Their victory proves short-lived when the villainous Fat Cat emerges, revealing the entire kitten rescue was an elaborate ruse designed to capture Gadget and force her engineering genius into his service. Working quickly despite her captivity, Gadget manages to construct a wireless communication device and dispatch crucial navigation details via carrier pigeon, guiding the chipmunks through hostile terrain toward Fat Cat's casino stronghold. With Gadget freed and equipped with a rocket of her own design, the Rescue Rangers mount their assault on Fat Cat's final lair to put an end to his schemes.