A youngster finds a treasure map and joins an expedition searching for a famous buccaneer's lost treasure on an unexplored island. However, their mission falls foul of a band of pirates hiding out among the crew. Musical comedy based on Robert Louis Stevenson's novel, starring Tim Curry, Billy Connolly, Jennifer Saunders and Kevin Bishop alongside the puppet characters.

After telling the story of Flint's last journey to young Jim Hawkins, Billy Bones has a heart attack and dies just as Jim and his friends are attacked by pirates. The gang escapes into the town where they hire out a boat and crew to find the hidden treasure, which was revealed by Bones before he died. On their voyage across the seas, they soon find out that not everyone on board can be trusted.