The "Dawn Treader" continues sailing into an area where merpeople dwell and the water turns sweet rather than salty, as Reepicheep discovers when he belligerently jumps in to fight a mer-man who he thinks challenged him. At last the water becomes so shallow that the ship can go no farther. Caspian orders a boat lowered and announces that he will go to the world's end with Reepicheep. The crew object, saying that as King of Narnia he has no right to abandon them. Caspian goes to his cabin in a temper, but returns to say that Aslan appeared in his cabin and told him that only Lucy, Edmund, Eustace, and Reepicheep will go on.