Sonya Melnikova’s life changes dramatically in the midst of a family celebration. An unexpected discovery turns everything upside down: it turns out that Sonya is not her parents’ biological daughter. Determined to find her roots, she travels to Nerechinsk. At the same time, Boris Protasov, an influential businessman from the capital, arrives in the city accompanied by his adopted son, Oleg. For years, the young man has been trying to unravel the mystery of his parents’ death. When Oleg hears Sonya’s story, he senses an invisible connection between their mysteries. At last, Sonya finds a woman who confirms: yes, she is her daughter. But the joy of their reunion quickly fades—the woman already has another family, and Sonya’s sudden appearance disrupts her settled life. Hurt and confused, Sonya prepares to leave Nerechinsk. However, Oleg asks her to stay and help him. Sonya agrees, unaware of the astonishing and frightening discoveries that await them ahead…
