The calm of snowy New York is disrupted by loud news: a famous musician has been found dead. It turns out that a kind of message in the form of a heart with the initials “D” and “E” was left on the body of the deceased. Who, and most importantly, why committed the brutal murder? Lieutenant Eve Dallas understands that there are two people operating in the city - a man and a woman, who are already responsible for similar terrible crimes. The city's best cop and her team have just a few days to save the next victim and stop the villains before their creepy game goes too far.