Ketcher, a professional dog thief, steals a valuable dog from Mrs. Dapper and after that everybody gets involved, including Mr. Hadley, Ethel, Ed, her sweetheart, Bill and the cop. The intricate action consists in the rapid and surreptitious switching about of several stolen dogs by the clever Ketcher, until nobody can tell which dog is whose, and everybody is accusing everybody else of being a thief. The police court is helpless to disentangle the mix-up. But in the end Mrs. Dapper gets back her dog. Ethel and her young man are reconciled, and as a finishing touch, a fierce bulldog fastens himself to Bill's trousers.
—Moving Picture World synopsis