The book begins with a focus on the relationship between two close friends, John Singer and Spiros Antonapoulos. The two are described as deaf-mutes who have lived together for several years. Antonapoulos becomes mentally ill, misbehaves, and despite attempts at intervention from Singer, is eventually put into an insane asylum away from town. Now alone, Singer moves into a new room.
The remainder of the narrative centers on the struggles of four of John Singer's acquaintances: Mick Kelly, a tomboyish girl who loves music and dreams of buying a piano; Jake Blount, an alcoholic labor agitator; Biff Brannon, the observant owner of a diner; and Dr. Benedict Mady Copeland, an idealistic black physician.