An attentive husband very much worried about his ailing wife buys her a tonic which has been highly recommended to him by the drug store man. He coaxes her to take a good big drink of the medicine as he knows it will restore her strength, and to encourage her he takes a dose himself. Hardly has he replaced the glass on the table, however, when he becomes possessed with herculean strength and performs all sorts of impossible feats, which finally get him into a good deal of trouble. As he walks along the street an inoffensive pedestrian coming in the opposite direction accidentally collides with him and the strong man fells him with a single blow leaving him prostrate on the ground. As soon as he recovers his breath he pulls himself together and races after his assailant. Several others join in the chase among them two or three burly policemen. The strong man seeing that be is pursued, quietly uproots a lamppost and turning defends himself with same, wielding it as if it were a light hickory stick. After a while the crowd manages to get our friend down and try to carry him off bodily to the station house. As they are crossing a bridge in the park the strong man breaks away and catching the policeman and others by the neck pitches the whole bunch right over into the stream. They swim ashore and get help and are again on the strong man's track, succeeding finally in arresting him. He is not long in his cell, however, because he breaks through the wall and comes tumbling in on the captain and his men as they are talking over the wonderful feats of strength performed by their prisoner. Their amazement is great and thinking to tame this new Samson the whole force jumps on him and gives him a terrible beating.
—Moving Picture World synopsis