In a world where the human race is on a great exodus from a plague known as The Rot, brave men and women called frontiersmen fight hoards of monsters through the Tower of Babel, a colossal and mysterious structure that links one world to the next, in order to gain new territory.

Join Marius Elrick, a young adventurer, as he embarks on a journey to find his missing parents who were scouts of great renown. Along the way Marius will find that becoming an adventurer was less glamorous and more dangerous than he could ever have thought and that not all monsters have horns and fangs - some wear the mask of men.