In a world shrouded by a dangerous mist known as the Darkness, which spawns monsters that feed on living organisms, cities have developed technologies to fend off the mist. The government has created a special military unit called DAMU (Darkness-Active-Mobile-Unit). This story takes place 20 years before the current events in the game (Darkness Before Dawn). Find out what happens when government conspiracies, ruthless experimentations and external forces all come crashing down.

As the Darkness in the Night comes, so will the Light shine in the Morning, Come Dawn.