Mary Beth rents an attic room to Richard, a composer. Frustrated with the publishers demands for cheap, trashy songs, Richard, penniless, tries to asphyxiate himself, but Mary intervenes, encouraging him to go on. Mary finds his song, and secretly sells a song she finds of his, "The Rainbow Girl", to a publisher, later finding out that she, herself, is the Rainbow Girl he wrote about.

"A five-act drama of intense heart appeal."