"It's a summer day so beautiful and peaceful that Hattie, paddling in her canoe in the middle of a lake, can't help but sing. In the deep water below, a creature is lurking. He's huge and green, with a long, long neck, and he rarely leaves his lair. But on this day, he hears something sweet and inviting. He hears a song. What happens when the creature rises to the surface is nothing short of magical"--provided by publisher.