Seven years ago, Prince Stefan Belta was sent to the Ostland court as a sign of peace after a suppressed uprising. There he earned the trust of the Czarovitch Lothar and became his adviser after Lothar ascended the throne. However, upon returning home, Stefan learns about a rebellion being prepared against Ostland. His task is complicated by the fact that he is himself a vampire, and he has to hide his true nature from everyone around him.