It would seem, what’s so terrible about forgetting your wallet and mobile phone at home in the morning rush? Nothing... good. This accident forced Irina to take part in fulfilling a seemingly simple task for a lonely patient at Natalya’s clinic. Well, further along the chain - to ever-increasing troubles. First, friends discover the body of a woman with signs of violence near the patient’s apartment. Having regained consciousness, the wounded woman burdens her friends with a new assignment - she has an unattended child at her dacha. However, instead of a child, they find the corpse of a man there. And then there’s a mysterious message from time immemorial... Complete labyrinths of memory and reality!