Although Thomas and Marjorie are determined to marry, they keep this secret for the time, fearing objections on the part of Mrs. Manning. In fact this fear is so great that Marjorie is inclined to back down when she and her sweetheart go for their marriage license. To settle the matter, Thomas picks her up bodily and carries her before the clerk in charge. The lovers later inform Thomas' mother of their approaching marriage. Mrs. Manning appears flustered and the sweethearts mistake this for anger. They are finally wed and leave for Savannah. It is Thomas' intention that he and Marjorie shall live with his mother. Fear of "mother-in-law" trouble mars the happiness of the newlyweds. While in Savannah, the couple meet the famous "Waving Girl" and learn her pitiful story. It makes them vow never to leave each other and in taking the oath the thought uppermost in the minds of each is lest trouble with Mrs. Manning shall come between them. Returning home, the two approach the Manning cottage with heavy hearts. They find Thomas' mother gone, but a note on the table informs them that she will return shortly. When Mrs. Manning finally does arrive, she is accompanied by a man whom she blushingly introduces to her children as their new father. Thomas and Marjorie then learn that Mrs. Manning's peculiar conduct prior to their marriage was due to her fear lest they discover her secret.
—Moving Picture World synopsis