 Barney reads in his paper that it s Good Neighbor Week and is encouraged to help his fellow man. "Say, that s a good idea", exclaims Barney whose neighbor is a beaver presently building a dam. Barney decides to help the buck-toothed animal with the wood chopping but the beaver impatiently tries to explain that he s quite capable himself. Finally, the beaver is finished with his dam but Barney, not satisfied, exclaims, "I ll build ya a great big one", and builds a dam the size of the Grand Cooler. Barney is greatly pleased by this... until he realizes his only flaw. Because of the dam s massive size, the nearby woodland area quickly floods!