In 1854, the patriarch Patrick O'Leary of the O'Leary family dies in an accident nearby Chicago while traveling amid-western prairie. His wife Molly O'Leary raises her three sons alone working as laundress. Her son Jack becomes an idealistic lawyer; Dion is a gambler; and Bob helps his mother in the laundry business and marries local Gretchen (June Storey) in the old area known as The Patch. Dion meets the singer Belle Fawcett in the cabaret owned by Gil Warren and they fall in love with each other and become lovers. They also open a business of their own to compete with Gil that becomes their enemy. However Gil invites Dion to join the politics with him but Dion plots a scheme with tragic consequences.