New England fisherman John Van Zandt sons Harold and Peter are in love with Eileen Arden, though she favors the younger brother Harold. The jealous Peter convinces Eileen that Harold is circulating false rumors about her, then convinces his younger brother to move to Boston. Six years later, John is unable to work so Harold returns to help support the family, finding employment as a lighthouse keeper. Peter jealousy is once again aroused and his drunken rage results in the death of his child, Anne. After realizing that Eileen knows of his deceit years earlier, Peter attempts to kill Harold in the lighthouse, but instead falls to his own death during the ensuing struggle.
