Conflict

Prince Caspian, Lucy, Edmund, Eustace, and the rest of the crew in the ship must find the seven lost lords of Narnia. They are scattered all across Narnia though, and they had a lot of obstacles along the way like Eustace turning into a dragon, or when they were captured as slaves. Another problem they encountered was when they had to go to a really dark island where dreams come true to rescue a lord but, at the cost of a couple of men are killed.

"I swore an oath that, if once I establish peace in Narnia, I would sail east myself for a year and a day to find my father's friends or to learn of their deaths and avenge them if I could."
(Chapter 2: On Board the Dawn Treader, Page 21)