Season 1

Mitar, a peaceful man living in Eastern Serbia, starts killing off his neighbours randomly. Petar, a troubled Security Intelligence Agency operative arrives at the village as a negotiator in an attempt to persuade Mitar to surrender.

Mitar ends up in a coma. Police inspectors Tomic and Blagojevic take over the case and invite a well-known psychologist Natasa as a judicial witness. Another story began in 1976, following Mica Djuric, a famous sports commentator.

Monk Tihon tries to convince Natasa that Ida is in danger; Mitar wakes up from the coma; Peter investigates on his own; in the 1970s, Mica visits his home village.

Petar returns to the village where Mitar committed the massacre and inquires about local customs, learning about a mysterious ceremony: the black wedding.

Petar meets local witch Mikula and witnesses the black wedding ceremony in the village; still sceptical, Natasa agrees to visit the witch; Natasa faces secrets from her past.

Following her visit with Mikula, Natasa begins believing Tihon's version of the story. Blagojevic and Tomic organise Mitar's transfer from hospital to the prison; in the '70s, Mica goes on a trip.

Nobody can figure out what Mitar is up to; Tomic remains unconvinced by Natasa and Petar's story; in the 1970s, the police try to work out why Mica committed the massacre.

Police inspector Tomic suspects Petar and Natasa are the culprits; Natasa and her daughter flee to Natasa's aunt's village; Petar chooses to protect Natasa at any cost.

Natasa becomes a fugitive as she investigates the mystery about her mother in an asylum in Slovenia; Tomic chases Natasa; Petar realises Natasa lied to him about the past.

Natasa and Petar snatch Ida and take her to church where Father Branislav resides; Tomic searches for Natasa and Petar while they battle the forces of darkness.