Beaver complains that there's an annoying sound coming from Dragon's place, and he can't sleep. Dragon sets out to discover the source of the noise - which turns out to be a lot trickier than he thought. No matter how hard he looks, or how much his friends Ostrich and Alligator help, he can't find the source. Finally, Beaver comes over to complain one last time and falls asleep on Dragon's sofa - and Dragon realizes the noise is the sound of Beaver snoring!