Dmitry Valevach was only 11 when his world changed forever. Now he's 33 and is one of the most prestigious members of the Polis Rangers in the Moscow Metro, a True Spartan at heart. He's part of an expedition to the unknown regions of the St. Petersburg Metro. Amongst his group are Boris Vakhrushev, Tatiana Beriya, Alexei Danshov, and Fedya Zheleznov. During this expedition, Novyye zemli, Dmitry ventures where no man has before, and finds a link between two long lost worlds; Equestria and Earth. He meets Celestia, Luna, and the Mane Six in his journey to save both his world, and Equestria.

Link to a Map of St. Petersburg Metro system.
Map

I write bad stories, so be advised. Also I'm working on a cover image so don't worry.