The families, Plump and Runt, although in fairly good circumstances, live a little beyond their means, so that the arrival of a letter from their wives' unknown and wealthy aunt is the cause of general rejoicing. Brimming over with anticipation of the good things to come, Plump confides in his club friends and they plan this joke, that one of them shall dress up and pose as the aunt. The plot is overheard by Plump's best pal and he informs Plump of the pending deception. Unfortunately, the real aunt appears earlier than expected, and our heroes, thinking that she is the impersonator lead her the life of a dog, much to the old lady's amazement. At last, driven wild by her relatives' unexplainable conduct, Aunty gathers her clothes and steals out in time to meet the bogus one, who promptly retreats. Explanations ensue, but to no avail, for the now-thoroughly disgusted lady tears up the $10,000 check and departs, leaving her would-be heirs frozen with disappointment.
—Moving Picture World synopsis