One night, Arthur has an amazing dream about a pink-and-green boat with a striped mast and beautiful figurehead. He tries to tell his family about it when he wakes up, but no one (not even the dog!) is interested. In fact, they don't even notice the boat on his head, growing larger and larger by the minute! Soon, Arthur is bouncing along the waves in his very own dream boat. Maybe now his family will listen to him!