The Vanishing Game

In a locked apartment, during a game of hide-and-seek, 6 y.o. Alina Borovko goes missing. The case is handed to senior criminal investigator Varta Naumova, who is new to the department, and special investigative agent Maksym Shumov. Borovko admits that on that day, against the wishes of his former mother-in-law, he took his daughter from the cultic church she's been forcibly enrolled into.