AllMovie

Thanks to Martin's Molecular Reassembler, a squirrel is transformed into an extremely hyperactive human being named Red (Hal England). Before long, Red has moved in with Martin (Ray Walston) and Tim (Bill Bixby), and so has his entire squirrel family. Martin has only eight hours to reverse Red's metamorphosis before it becomes permanent--and before Red's family is exterminated by a nervous Mrs. Brown (Pamela Britton) and Detective Brennan (Alan Hewitt). The episode ends with a cute takeoff of Ross Bagdasarian's "Alvin and the Chipmunks" franchise.