Five days after Owen Zastava Pitt pushed his insufferable boss out of a 14th story window, he woke up in the hospital with a scarred face, an unbelievable memory, and a job offer. It turns out that monsters are real. All the things from myth, legend, and B-movies are out there, waiting in the shadows. Some of them are evil, and some are just hungry. Monster Hunter International is the premier eradication company in the business. And now Owen is their newest recruit.

When marine private Oliver Chadwick Gardenier is killed in the marine barrack bombing in Beirut, somebody who might be Saint Peter gives him a choice: Go to heaven, which, while nice, might be a little boring, or return to earth. The Boss has a mission for him, and he's to look for a sign. He's a marine: He'll choose the mission. Unfortunately, the sign he's to look for is "57". Which, given the food services contract in Bethesda Hospital, creates some difficulty. Eventually it appears that God's will is for Chad to join a group called Monster Hunters International.

On the streets of Boston, the world is divided into the ordinary Usuals, and the paranormal Unorthodox. And in the Department of Unorthodox Affairs, the Auditors are the magical elite, government-sanctioned witches with spells at their command and all the power and prestige that comes with it. Grimshaw Griswald Grimsby is…not one of those witches.

After the War of the Gods, the demons were cast out and fell to the world. Mankind was nearly eradicated by the seemingly unstoppable beasts until the gods sent the great hero, Ramrowan, to save them. He united the tribes, gave them magic, and drove the demons into the sea. Ever since, the land has belonged to man, and the oceans have remained an uncrossable hell, leaving the continent of Lok isolated.

In a world of criminals, thugs, con artists, cheats, and swindlers, there must be a man to stand against the powers of darkness and corruption. A man not afraid to walk the mean streets—whether they be those of 1930s Los Angeles, an ancient fantasy realm, or some far-flung planet of a future star empire. He is a man who knows that a “good man” is not always a “nice guy”. But when the chips are down, he understands that a hero does the right thing, even if it means losing everything.