After attempting to fix the water source to the tree house, Crusoe loses his wedding ring. Meanwhile, Friday has an unusual dream about a young woman who is lost and yearning for the sea. Crusoe and Friday attempt to discover the truth and set her spirit free.

Crusoe and Friday need to find a way to outsmart a group of mutineers, who have landed on their island in search of supplies. Crusoe contemplates forming an alliance with the ship's trapped captain in hopes that he can lead Crusoe and Friday back home.

Crusoe is racked with guilt as he contemplates stealing the boat of cannibals that have arrived on the island because of the two surprising captives that they would be leaving behind with them.

Friday has become severly ill and insane, and it's up to Olivia and Crusoe to find the rare plant that will cure him.

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.

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.

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.

A mysterious warrior steals a lock of Crusoe's hair and he later finds out that people are looking for him. Friday has to decide to save Crusoe or himself after he is defeated by three warriors.

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.

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.