Serres, a frosty dawn on March 13, 1964. A sixteen-year-old pregnant girl arrives all alone at the city hospital, bleeding. A few hours later, she dies after giving birth to a baby girl. Three days later, the infant mysteriously disappears from the maternity ward. The Gendarmerie's investigations remain fruitless, and the case file is archived.

In September 1989, the peculiar strangulation of a young teacher shocks Thessaloniki. After two months of investigations and with the killer still at large, a young mother is found murdered in exactly the same way.

Inspector Stergiou of the Thessaloniki Security Directorate notices that both victims were born on the same day, March 13, 1964, at Serres Hospital. The developments are rapid. Stergiou realizes that he has just entered a dark labyrinth of a strange case, whose thread begins twenty-five years earlier. Who stole that baby, and where is it now? Does he know that his life is in danger?

Who and why is murdering women born on the same day in the same hospital? What games were played, and what pact with death awakened a killer twenty-five years later?