Near a desolate Midwestern county road, a bound man crawls toward a remote postal box. As a figure closes in behind him, the man manages to slide a bloody plea for help into the blue box’s small opening just as the figure closes in and violently pulls him off.
This ominous, blood stained help note makes its way to the Peoria County post office in industrial central Illinois. It ultimately finds its way onto the desk of Jasper, a seasoned and skilled dead letter investigator, who’s responsible for investigating lost mail and returning it to its senders.
After initially dismissing the help note as a teenage prank, a series of events keeps the note on his radar. As he investigates further, a search ensues that quickly leads him down a grim and unforeseen path.