The Chronicles of Narnia: The Voyage of the Dawn Treader (2010)

This time, Lucy and Edmund return to Narnia with their annoying cousin Eustace aboard the ship 'The Dawn Treader'. They are joined by their friend, King Caspian, who is on a quest to find the Seven Lost Lords of Telmar, the only ones with the swords needed to save Narnia from a fog that subdues wills. Will they allow themselves to be manipulated by this dangerous force?