Left with two small children, Mrs. Morgan finds it difficult to make both ends meet. Polly, her daughter, does the housework. Tommy is looking for a situation to help his mother. He applies for one in the office of Hervey and Porter, real estate, etc. Porter refuses him because he has had but little experience, but Jack Hervey, touched by the boy's earnestness and hard story, takes him on. His mother and sister are jubilant. A week after he has the place he falls ill and the doctor says he must stay in bed. In this dilemma, Polly suggests that she dress in Tommy's clothes, pass herself off as his brother, and get them to let her fill his place till he gets well. The scheme works. Jack Hervey and Porter are both in love with Estelle to whom Jack is engaged. Porter tries to make love to Estelle and is indignantly repulsed. Porter resolves to ruin Jack and give away a big land deal, on which he hopes to make a fortune, to a rival real estate man. Polly becomes suspicious, and, hiding herself in a cupboard, overhears what they have to say. She warns Jack, who closes his deal quickly and outwits his enemies. Polly then confesses her sex, and the deception is willingly forgiven for what she has done. Jack and Estelle, who are about to be married, resolve to take a special interest in Mrs. Morgan and her family and help them in every possible way.