Masha Vasilyeva, a psychiatrist-psychotherapist, uses her own methodology in working with patients. She analyzes situations with the help of dolls, where each has its own role. And when a murder occurs in Masha's circle of patients, it is she who, using her method, calculates the killer. But the killing spree doesn't end. One by one, clients of the psychological center are dying. What unites them, besides the meeting place? While the police are investigating, Masha tries to figure out what is happening using her method, but here it fails. Masha understands that an invisible, sinister Puppeteer has entered the game, and it is he who is now moving the toy figures.
