Events Monster Heart developed in the near future, when the coupling of several worlds, humanity was on the verge of extinction. The civilization collapsed and the planet Earth is now more like a sophisticated understanding of medieval fantasy. People live in the city-states, and prefer not to go beyond the walls unless absolutely necessary. For guests from other universes happy to eat fresh meat. In order to protect and ensure the safety of ordinary citizens it was established the Order of the Hunters - a brotherhood of professional killers evil. The protagonist of one of the most successful and productive operatives, once he was lost and presumed dead, but just the other day he is in deep sleep tracked down and taken to a shelter, where he opened his eyes. He is waiting for the confused course of recovery skills, then an urgent need to begin their direct duties.