Oleg Ivanovich Saikin, a caring head of the children's sports and recreation camp "The Band of Obstacles" on the shore of Lake Mirror, is preparing for the arrival of city children. The task of educators is to tear children away from computer games and idle wandering around the streets and teach them the skills of karate, mountaineering, horseback riding and orienteering in the forest with a minimum supply of food and water. Alexei Zhdankin, the son of divorced parents, comes to the camp with a
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