A Soviet scientist creates a brilliant robot. This is a boy who is able to solve any mathematical problems, he writes the best essays and sings perfectly! And he is also an exact copy of schoolboy Seryozha Syroezhkin. A clever boy quickly shifts all his duties to an electronic double. He does his homework for him, goes to school and does household chores that his parents entrust to Syroezhkin...
Soviet geologist Viktor Klimenko with his guide and assistant, Yakut Nikol, fall into the trap of enterprising businessmen. They are going to conserve all the air in order to sell it monopoly, profit and dictate their will to the rest of the world.
