Temu, a 12-year-old gamer, is brought on vacation to the remote village of Tsaplino, away from the Internet. However, contrary to expectations, life in the village is bustling around the old stable of the Saltykov boyars, where local boys are preparing for equestrian competitions. 12-year-old Phil and his faithful friend Orlyk really need to win these competitions, but a terrible threat looms over the stable — they want to demolish it. The boys accept the challenge. The search for treasure, the mysterious old ghost, the fire in the stable, dangerous caves and winning competitions - this summer will be the beginning of a strong friendship for the guys.