Detectice Michael Costello gets visited by a mysterious woman one rainy night, intent on hiring his skills.

Hesitant, Costello takes the case, and so starts the long and slippery downward spiral into the dark, neon-lit, and rain-washed streets of the tired city of Dawnpour, a city filled to the brim with tehcno-maniacs, purists, and ghosts wearing familiar faces.

Costello soon finds himself in the middle of a sinister scheme, where almost everyone wants to take adventage of him to further their goals. Torn between his own morals and his professional ethics, Costello tries to do what's best for the city.