In the world of magicians, people are considered to be ordinary worthless slaves. What will happen if the Masters of the High Caste of magicians begin to be killed? And the murders will be carried out using mysterious runes, which by default were considered only human writing? And what about Raisa, the human girl who is the only one who understands this teaching, and who is suspected of murder? What if no one else knows the secrets of the ancient runes except her?