This story unfolds in a seaside inn named Admiral Benbow owned by Jim Hawkins family.
One day an old seaman named Billy arrives at the inn and takes a room there. His cherished possession was an old sea- chest.
Several weeks after his arrive an evil looking sailor comes to the inn. Billy has a fight with him which results in the evil man being wounded. He runs away, and Billy falls exhausted on the floor. He suffers a fatal seizure.
Jim and his mother go through his cherished chest and discover a treasure map. Jim’s mother took only that much money as Billy owed. Jim shows it to Squire Trelawney and Doctor Livesey.
They plan a voyage to the island where the treasure is hidden. The squire travels to Bristol where he purchased a ship named The Hispaniola. He hires a sea-captain and staffs it with sailors recommended by the one-legged cook – Long John Silver.
When they sail towards the treasure island Jim inadvertently overhears a conversation among, Silver and some of the crew members.
They were planning a mutiny. They had also been on the ship that had carried the treasure that Jim and his friends were seeking.
Jim relates all he has heard to his friends. When they reach the island, fighting breaks out among the two groups.
Jim hides on the island and over their meets – Ben Gunn, another excrew member, who had been marooned on that island three years back. They become friends as Ben Gunn agree to help Jim. In the meantime, Trelawney and Livesey along with the loyal crew members row ashore. They find a stockade which they take for themselves.
Long John Silver tries to negotiate with them but to no avail. Jim steals of to the ship and cuts the ropes, setting it adrift. When he returns to the stockade he finds that his friends have given the map to the pirates.
The next day, when the pirates go to the spot where the treasure is hidden, they find that it is gone.
This angers the pirates and they attacked Silver and Jim, but the Squire and doctor save them.
They then go to Gunn’s cave to recover the hidden treasure. Silver surrenders to them.
