The USA in the 1930's, The Stock Market has crashed. A wave of violent crime has swept the nation and people are disappearing. This is the surface world we know, civilization, myth, and legend are more intertwined than we could ever have imagined. Ancient stories from every culture around the world all include tails and stories of demons and creatures. The ancient Greeks and Egyptians, the biblical stories all tell the tale of beings praying on man. The simple truth is that they exist and have always existed. As the modern world emerges and as a dark cloud overtakes Europe, The President creates a new secret government agency to research, combat, and protect America from this ancient threat and from those who may try to harness the evil for their own dark ambitions. Monster Noir follows agents of the newly formed OSS as they combat the wave of crime sweeping the nation.