Three schoolchildren accidentally find a magic portal in the Holy Trinity Lavra of St. Sergius and are transported into the past. Now their goal is to return home, and to do this they need to go through a wonderful 14th-century forest from the time of the Tatar-Mongol yoke and the Battle of Kulikovo. The teenagers will be helped by St. Sergius of Radonezh.
Three schoolchildren accidentally find a magic portal in the Holy Trinity Lavra of St. Sergius and are transported into the past. Now their goal is to return home, and to do this they need to go through a wonderful 14th-century forest from the time of the Tatar-Mongol yoke and the Battle of Kulikovo. The teenagers will be helped by St. Sergius of Radonezh.