Mr. and Mrs. Jones and their six children start out for a picnic in the woods. Little Jimmie insists on taking his beloved Great Dane pup along, and the animal proves a white elephant as soon as they try to board a trolley car. The result is they have to walk to the picnic grounds. There they get into a row with a group of Italians, and while boating on the lake, the pup leaps overboard and Jimmie after him. Jimmie's parents plunge in after him, but as the water is only two feet deep, they just get wet. Waiting for his clothes to dry, Jones gets into a barrel, which plunges downhill, spreading destruction and terror all along its path, finally fetching him up against a tree and bursting open. Jones, with the help of his wife, gets away from the cops, and tries to get rid of the pup, but all his efforts are in vain. He thinks surely he has lost the animal by dropping him from a taxi window, but when they get home from their "quiet little picnic," Mr. Pup is quietly sitting on the doorstep, and Jones disgustedly gives up.