Due to a mix-up at the doctor's office, Fred believes he has only 24 hours left to live.
as Fred Flintstone / Monkey #2 / Turtle #2 (voice)
as Barney Rubble (voice)
as Wilma Flintstone / Pebbles Flintstone / Elephant (voice)
as Betty Rubble / Nurse / Turtle #1 (voice)
as Frank Frankenstone / Dinosaur / Monkey #1 (voice)
as Doctor / Fish #1 / Fish #2 / Parrot / Pigasaurus (voice)
