Taking place in Jellystone Town, it features Yogi Bear and the other popular Hanna-Barbera characters including his friends Boo-Boo Bear, Huckleberry Hound, Snagglepuss, and Yogi's girlfriend Cindy Bear depicted as 14-year-old crime fighters. The gang hung out at Jellystone Mall owned by "Diamond" Doggie Daddy with Augie Doggie as his heir to the mall business. Yogi and the gang work at an agency called L.A.F. (short for Lost and Found) where they act as detectives trying to solve mysteries under the supervision of the mall's security guard Officer Smith. Dickie Dastardly and his sidekick Muttley would cause trouble for Yogi and his gang. But Roxey Bear, a teenager, was causing trouble with Dickie Dastardly and she was Cindy's rival and Yogi's competitor. The characters were never seen at home or school.

Some of Yogi's other pals like Top Cat, Secret Squirrel, Morocco Mole, Hardy Har Har, Squiddly Diddly and Wally Gator were also featured as young children. Other Hanna-Barbera characters are still in adult form: Hokey Wolf is the Mayor of Jellystone Town and Ding-A-Ling Wolf briefly appeared as his photographer, Loopy De Loop works at the Jellystone Mall's Picnic Basket Food Court, Atom Ant served as Jellystone Town's superhero, Quick Draw McGraw and Baba Looey were wild west-themed entertainers, Pixie and Dixie lived in the cheese cottage within a cheese store owned by Mr. Jinks, Peter Potamus and So-So ran a plant shop called "Peter Potamus' Plant Palace." Snooper is a crime-solving celebrity while Blabber ran the "Crooks 'n' Books" store, and Magilla Gorilla appeared as a teen idol in "Jellystone Jam" as Magilla Ice (a takeoff of Vanilla Ice). Also, Granny Sweet made an appearance in the episode "Super Duper Snag."