The squire and doctor hire a number of men to head the voyage, including Long John Silver as the ship's cook. Along the journey at sea, Jim falls asleep inside a barrel and awakes to hear that Long John Silver has planned a mutiny along with most of the crew!
Once they reach the island with the treasure, Jim slips onshore with Silver and some of the mutineers. After the mutineers kill two men that don't want to join the mutiny, Jim runs away into the jungle on the island. While there, he meets an abandoned man, Ben Gunn.
Meanwhile, Trelawney, the doctor, and the other men get ashore and find a stockade, or a giant wooden enclosure, something like a mini-fort. Eventually, after a meeting between Silver and the captain of the ship in the stockade, there is a battle. While a number of mutineers are killed, two men die and one is injured within the stockade, and Dr. Livesey goes out to find Ben Gunn and enlist his help.