The animated adventures of Jonny Quest (Tim Matheson), a pre-teen boy whose father, Dr. Benton Quest (John Stephenson, later Don Messick), is one of the three top scientists in the world. Dr. Quest is involved in areas of top secret research that takes him all over the world so the government assigns Roger “Race” Bannon (Mike Road) as the Quests’ bodyguard. They are joined by Hadji (Danny Bravo), a young boy from India with some mystical abilities, and scrappy bulldog Bandit (Don Messick).