Light magicians decide that the danger is too great and now they need the Union of the Elements. It has never been specially collected before, but there is no time to wait for a sign from above. Pupils from Zarechye, Kitezh and Divnomorye must meet and find those very magicians who will be able to work together. A great journey awaits Margarita, Polina, Mitya, Seva, full of secrets and new knowledge, but will it lead them to the Union of the Elements? Meanwhile, the Dark Mages get in touch and propose a union, the refusal of which threatens Irving with disaster. This is the final part of the saga. The heroines will wait for their initiation, the heroes will find what they were looking for; fate will tie all the threads together. And every reader will eventually be able to step across the river and find himself on the other side.