From star to water

Three Smolyans go to Christmas Eve to guess to the mystical disappearing bell tower, designed, but never built by Rastrelli. Who knew that one of them would come from the past, to the other from the future, to the third - from the present, but also unusual.
This motley company has to complete the task of the black nun - to remove the curse from the Smolny Council. At the same time, the guys either fall into the estate of the sorcerer Bruce, then puzzle over the mystery of the "Black Square", then in the 19th century, under the advertisement of the "soft glass", they sell ... polyethylene bags. Heroes are found not only with the characters of the Russian Gothic, but also with the "demon" of the people of the People’s Finding movement Sergei Nechaev - a charming hoax and a cruel puppeteer. Each of the heroes passes its own abyss, and everyone has to overcome it in their own way.
For secondary and senior school age