Nine passengers on the Perm-Antalya flight find themselves locked in the airport's border control zone. It appears that they were gathered there for a reason.

The Cyrus the Great Diamond is stolen from an excavation site in Iran and falls into the hands of a Russian boy vacationing at the seaside with his family.

About the Russian scientist Grigory Perelman, who proved the Poincare hypothesis. Mathematicians around the world have not been able to prove it for about a century, at the moment it is the only solved mathematical problem out of the seven problems of the millennium.

Sonya, a young actress who does not get roles in the theater, is forced to work in cold sales by phone. There she meets Skull, a brutal gangster who is in love with his boss's girlfriend. Thanks to the Skull, Sonya gains knowledge in the specific prison vocabulary and tries to save her theater artistic director during a robbery.