The plot of the film is based on the true story of Danish serial killer Dagmar Overbye, who helped poor women get rid of unwanted children. Copenhagen, 1910. One day, a young factory worker named Karolina starts working for Dagmar, who turns out to be abandoned and pregnant. Karolina would like to give her child up for adoption to give it a chance at a better life. She relies on Dagmar\'s help, thinking that she is involved in finding adoptive families. To avoid poverty, Karolina takes on the role of a wet nurse. But one day, the heroine discovers the horrifying truth about Dagmar\'s real activities.