Don't Have A Title(Please help)

Visiting their annoying cousin, Eustace Scrubb, Lucy and Edmund Pevensie and Yami Aknamkanon, who is forced to stay with Eustace since his parents died and were friends with Eustace's parents, come across a painting of a majestic ship called the Dawn Treader. Suddenly, the painting comes to life and draws the youths into Narnia, where they meet their old friend, King Caspian and Pharaoh Atemu. Caspian and Atemu are on a quest to find the seven lost Lords of Telmar, whose swords will save Narnia from an evil green mist that enslaves men's minds and bodies.