In the slums where he was raised, a young gangster, Karl, happens upon a common violent scene for any poor soul, especially a beauty, caught wandering alone at night. Upon joining in on the “train” of events, he discovers the victim being passed around was in fact his own father, and discovers the man’s hidden secret. One taste of his sire’s forbidden “flower” had left him wanting for more, but as fate would have it, once plucked, this “secret flower” slipped from his grasp. From then on, Karl was driven by one task, finding that beloved father of his again.