One day Coventry Petmore leaves his wife and child to go out in the world and fight the social evils of divorce and loveless marriage. Circumstances lead him to the home of Judge Mitchell, where the judge's son, a minister, and his wife Beatrice reside. The minister does not believe in expressing affection to his wife, and Beatrice becomes enamored of her chauffeur Larry Price. Petmore encourages Beatrice to tell the minister that she is running away with Price, then surreptitiously coaches the minister to give a response that Petmore believes will win Beatrice back. The plan backfires, however, and only a rainstorm and car trouble prevent Beatrice and Price from running off. Getting wind of Petmore's role in the affair, the judge has him ejected from the household, and Petmore returns home to discover that his wife has run away with her chauffeur. Petmore's conviction in his theories remains unshaken, however.