Life on the Fifteen Streets is tough - a continual struggle for survival. Born into an ever-expanding family, John O'Brien grew up with nothing to call his own. Now, he works on the city's docks while trying to keep his loved ones safe from the drunken wrath of his father and brother.

But everything changes when John meets Mary Llewellyn, a beautiful young woman who belongs to a world of wealth and privilege. What starts off as casual friendship soon blossoms into a rare love, but when John is embroiled in scandal Mary's parents forbid them from seeing each other.

It seems the Fifteen Streets has succeeded in keeping them apart, but can their love conquer all?