Crusoe and Friday struggle to fend off the men from the sunken boat, once they realize that Mr. Blackthorn and his men are there to harm them and steal their belongings from the treehouse. Crusoe finds out what Mr. Blackthorn is up to from an unwilling Samuel Tuffley.
Friday and Crusoe help rescue men from the water after another boat sinks their tiny ship. Crusoe is puzzled to find Mr. Blackthorn among the men, and Friday wonders what he is up to.
A mysterious warrior steals a lock of Crusoe’s hair and he later finds out that those people are hunting him. Friday decides to try to save Crusoe, but is captured. They both are forced to fight to the death, instead of being killed by the royal tribe’s king. Will one kill the other, or will they find a way out?
Crusoe is overjoyed–and somewhat mystified–when Susannah appears on the island. Later, while searching for Friday, Crusoe and Susannah’s lives are endangered after coming across someone else on the island.
Crusoe helps Friday by trying to bring back some of the bad things from his past, so he can help Friday get through them. Friday’s past helps him in making the treehouse safer from intruders.
Now that the mutineers’ ship has been fixed, he must think of a new plan to get on it and off the island, once someone discloses his plan to the ship’s captain.
Friday has become severly ill and insane, and it’s up to Olivia and Crusoe to find the rare plant that will cure him.