In this world, our vampires come from an isolated tribe who, after centuries of inbreeding, is plagued with both porphyria, a fatal allergy to the sun, and lethal anemia. This forces the tribe to be nocturnal, and to survive on human blood. The consumption of blood slows down their metabolism, giving them a lifespan lasting centuries, and making them appear immortal. They live sheltered in their insular mountain stronghold, having created a society with its own rigid rules and religion. They feel superior to humans who they see as childlike beings, something akin to cattle. Most of their members have never ventured out into the human world, and are totally alien to its customs.
Lucas, one of these vampires, feeling imprisoned by his tribe’s narrow-minded mentality, left to forge a new life, decades ago. He is now quietly settled in suburbia with his pregnant wife Miriam. The series begins when two tribe members, Marek and Trina, have tracked him down because the tribe is dying off and is unable to reproduce. They need Lucas’s help and will not leave until he finds a solution. This turn of events throws all their lives in upheaval: Lucas must face a nature he has long suppressed and come to recognize that he will never truly fit into the life he has created; Trina becomes fascinated by this strange new world and must learn to navigate its complex terrain; Marek struggles to keep his mission on track in a world that is becoming increasingly ambiguous, forcing him to reconsider the strict tribal values he has always clung to. Meanwhile, Miriam starts questioning her feelings for her husband and for the life she has built weeks before her child is due.