Secret agent Rock Slag is replaced by Fred Flintstone, who resembles him, after being injured during a chase in Bedrock. Fred must travel to Paris and Rome, while keeping his mission a secret from Wilma, Barney, and Betty, to stop the Green Goose's plan to launch a destructive missile.

The Man Called Flintstone
In this action-packed comedy, Fred Flintstone, a lovable but unlikely hero, finds himself on a mission to capture a notorious criminal after a spy who looks just like him is injured on a top-secret assignment.