Hot August 1986. Twins were dropped off at one of the city’s maternity hospitals. With the advent of children, the countdown of strange deaths and mysterious events begins. Andrey has been in love with Svetlana since school. Having matured, they get married, but their happy life is ruined by Andrei’s betrayal with his old school friend Maria. Svetlana, having lost her children and the opportunity to become a mother, begins to go crazy, and then Andrei decides to adopt someone else’s child. They adopt twin girls who were dropped off at the maternity hospital. Andrei finds out that there are no witnesses left to the appearance of children in the maternity hospital. From this day on, Andrei's life turns into a nightmare. After the death of his wife, he receives an offer from a large in vitro fertilization clinic and goes to work abroad, leaving the children in the care of his late wife's parents. Under strange circumstances, the girls and their grandfather burn to death in their country house. Andrei, having returned to his homeland, illegally continues the human cloning experiments he began abroad. He begins to understand that all the mysterious events that happened to loved ones were planned by some powerful beings. And they have one goal: to get his technique for reproducing clones.