For more years than he can remember, astronomer Ernie Cowarth has been sworn to secrecy on behalf of the United States government regarding an incomprehensible lunar event-later known as the "moonflaw"-that occurred in late October 1953. Due to negligent actions of the Apollo 15 crew, who succumbed to their deeper curiosities during what was designed to be a restricted investigation some eighteen years later, cosmic radiation from the event was inadvertently conveyed back to Earth, where it eventually brings about a strange phenomenon: a series of disorienting and disturbing dreams that link together the minds of perfect strangers.

Bizarre events ultimately coalesce in the city of Hartford, Connecticut, where a demonic entity has seized opportunity from the fallout, escalating the emissions into a dual threat. From reanimated beings known as Deceivers, who furtively project into the living realm, to a subterranean lair that snakes below the city like a flooded catacomb, unholy horrors await a cast of dream-plagued, fate-bound individuals who must face unfathomable darkness in order to restore humanity as it once was before the Moonflaw.