Vladimir Feklenko

The hostel number 3, in which the heroes lived, is being demolished, and three guys (Michael, Anton and Kuzya) are relocated to a new hostel. In the new building they are settled in block number 510 with the girls Christina, Yana and Masha. Kuzya begins to date Masha, and Anton dates Christina. Later Kuzya leaves for Agapovka, the botanist Valentin is settled instead.

Students of the Sevastopol Nakhimov School dream of finding treasures that were hidden at the command of Admiral Nakhimov during the Crimean War. The treasure hunt involves smugglers, black archaeologists and even ghosts. Having gone through a series of exciting adventures, sometimes getting into mystical stories, the boys will learn the value of true friendship and mutual assistance.

1982. After the task force breaks up, Major Viktor Kovalev wants to take over as boss. Around the same time, pop singer Andrei Grinyaikin dies during a concert. Someone tries to cover up the case, and Sonya Timofeeva begins her own investigation. Kovalev also picks up the trail of Mosconcert, which appears to have influential patrons behind it.

1941. Georgy Volkov, Captain of the State Security Service, is delivering to the Soviet Union a consignment of emeralds under a trade agreement between the USSR and Germany.

Two childhood friends work in the same police department. Sergey Glukharov is an investigator, Denis Antoshin is an operative. An ordinary evening, which they decided to spend with friends in a restaurant, brought them a terrible surprise.

A mystery around a search for a lost skull of Nikolay Gogol.