Troll is a story about a pregnant and religious girl, Mille, 13 years old, who endures a life filled with sexual abuse.

Herluf lives a complacent life with his wife Inger-Lise. Their daily routines are only interrupted by their daughter's marriages, the third now about to take place. But Herluf's problems are more serious than an indecisive daughter, his wife is cheating on him and he's started forgetting things at work. And one day Herluf doesn't return home.

Denmark in 1927. The ambitious police officer Otto Himmelstrup leads the newly formed Special Unit, which is tasked with assisting local police in solving particularly difficult crimes. When a body is found in a burnt-out summer house in Esbjerg, Otto and his team begin to unravel an unusual murder mystery, revealing power struggles and corruption among the city’s elite. The closer the unit gets to the truth, the more dangerous it becomes. Soon, Otto finds himself not only battling powerful enemies but also confronting his own dark side in his quest to solve the case.