Commodore Nutt and Captain Swivel take a jolly party of young folks in a cruise on their yacht. Their boys, Lem Nutt and Chat Swivel, are incorrigible mischiefs, and the love-making begins with the girls before the anchor is dropped in a friendly harbor where the bathing is good. The spooning among the youngsters is so noisy and so continuous, that the Commodore and the Captain are scandalized and give strict and emphatic orders to "cut it out." Thereupon the young folks plan a royal revenge. The two ancients prefer the solitude of their private bathing beach and repair to a lonely cove, where they swim daily, unimpeded by striped bathing suits. The girls steal their clothes one morning in a very ladylike manner and present them to the boys. When the elderly gentlemen come back to where they have cached their clothing, they find only their caps and their oxfords. They are forced to drape themselves with seaweed and make a dash through the village in order to reach the yacht. They are chased by the Grassville Sheriff, but finally swim out to their yacht. Immediately they lay hands on the rails, they are pushed off, and they are not allowed to board until they promise not to interfere with the prerogatives of the young people, in having the best possible time under the circumstances.