Almost five months have passed since Spasgorod experienced Operation Revival: a gigantic steel tower opened up like a flower, and glade floors scattered across the plain, forming districts of the new city. Its inhabitants saw the sky and the sun for the first time! And what about Vitka, Nastya and Dimka - the guys who made this transformation possible? As a reward for their exploits, the twins received universal key cards that allowed them to control any Elevator. Adults considered such a gift honorable, safe and... useless - after all, the Elevators now stand firmly on the ground, and do not move along the floors of the tower. But it soon became clear that the adults were mistaken!