In this world, any shadow is a gateway to a dangerous and unexplored dimension, tunnels in which are built by adherents of secret arts. Here the Sun has a dark twin star, an ordinary handshake can turn into a curse, and a shadow can cast a person. Here, six grandees fight for influence at court with poison, betrayal and steel, a young king barely retains power, the Inquisition grows in power, and real monsters can come from the darkness. When former soldier and mercenary Arachon I'Barratore comes into the hands of a shadowgraph - a picture burned into glass with a mysterious six-armed figure emitting light, the skilled swordsman finds himself at the center of a conspiracy, the threads of which stretch to the very top of society, and now nothing is at stake. only the fate of Arachon, but also the throne of his country, as well as the lives of all its inhabitants...