What should a well-mannered man do if a charming girl in a bar asks to fasten the lock of her elegant wristwatch? Of course fulfill the request! What should a fifteen-year-old teenager, Pilgrim, do when he sees how this same watch is later packed into a plastic bag to preserve the fingerprints of a polite man? Incidents are growing like a snowball... The murder of General Tokmakova and the theft of her jewelry mysteriously intersect with the mystery of an ancient Flemish painting, similar to an encrypted chess game, owned by a famous doctor, Pilgrim's grandfather. Yan's dashing girlfriend, who became Pilgrim's assistant, leads him to a dangerous line , after which the children's game of detectives ends and cruel reality begins: betrayal, the struggle for big money, deception and death...