The Voyage of the Dawn Treader (Chronicles of Narnia Book 5)

In 'The Voyage of the Dawn Treader,' the fifth book in C.S. Lewis's Chronicles of Narnia series, Edmund and Lucy Pevensie, along with their cousin Eustace Scrubb, are magically transported back to the world of Narnia. They find themselves aboard the Dawn Treader, a ship captained by King Caspian, who is on a quest to find the seven lost lords of Narnia. As they sail to the eastern edges of the world, they encounter a variety of adventures, including battles with sea serpents, encounters with dragons, and visits to mysterious islands. Eustace undergoes a transformation from a selfish boy to a more courageous and generous character after being turned into a dragon and then restored to human form. The voyage leads them to the edge of Aslan's country, where they meet the great lion Aslan himself. Reepicheep, the valiant mouse, continues into Aslan's country, while the children are sent back to their world, having grown in courage, faith, and understanding.