1744. Russian Empire. Being childless, but at the same time wanting to finally consolidate on the Russian throne of his - "Peter's" line of the Romanov dynasty, Empress Elizabeth Petrovna decides to marry his nephew Karl Peter Ulrich, brought from Prussia, called in Russia "Peter Fyodorovich" to some noble, but preferably not very rich and not very willful European "princess". Elizabeth is intrigu...

Three teenagers - Artyom, Vika and Maxim - are getting into a lot of adventures in a mysterious place called Blue Valley.

Two teenagers are investigating a mystery of a possible monster living in the lake near their home town of Zaborsk.

Two thiefs are trying to steal a big expensive necklace from an old lady in Odessa