Magda is sure that her father was killed, and the Guardians - fighters against evil spirits, and the Sons of Cain - demons who live like ordinary people are connected with this. The search for answers leads the girl into the thick of dangerous intrigues. In addition, love complicates everything. A demon constantly stands in Magda’s path, the dark side of which is eager to get her. But the Guardian is also ready to fight for the girl’s heart. Who will she choose? What will she do when terrible secrets emerge from the past? How will she cope with the trials that will befall her? After all, the price for the desired truth will skyrocket when Cain and the demoness Lilith intervene. They are on opposite sides of the conspiracy. In which there is a third, even more powerful side.