 After teasing Donald with knocks on the root, the beavers make it to the main trunk and begin chewing.Every time Donald spies sawdust coming out of a hole and plugs it, the beavers chew somewhere else, until there are holes in the trunk spitting out sawdust.Donald tries scooping the sawdust back into Old Sequoia, but one beaver catches it on his tail and flings it back on to Donald, turning him in to a giant sand duck.