A quiet vacation with visions of sugared carrots turns into a nightmare, sprinkled with sheer terror! Nibbles has been sent to Grandma Armelton's while his family is on vacation. Grandma's thug of a fat cat, Bartholomeow, gang leader of The Furocious Felines, has put aside his quest to once and for all eat his guinea pig guest. Instead, with a plea for help, he begs Nibbles to help solve a disturbing mystery-Bart's friends have gone missing. Against his better judgement, as saving a bunch of cats doesn't seem like a wise choice, Nibbles the detective dusts off his trusty fedora and answers the call of duty. Will the unlikely pair survive the notorious neighborhood gang of cats, basement rats, a bat, and a thieving witch? Find out in this next adventure, Nibbles Goes to Grandma's.