When a young boy discovers an empty cardboard box on his front lawn, he can't believe his luck. He turns the box into a fort and invites his friends over to play. As the boys use their imaginations, the box magically transforms, becoming anything they want it to be. The colorful illustrations take the reader along on the adventure as the boys explore caves and pirate coves. Become kings and cowboys. Learn about land and sea creatures. With a little bit of imagination, an everyday item can become a child's best friend.