An expedition of a few geologists is going to Siberia in order to found a gold sources during 1918.

The continuation of the story started by adventure movie "The Lost Expedition" set in 1923.

About an oil exploration geologists exploring the northern regions of the country.

Writer Pavel Snegirev comes to the village where during the war there was an orphanage where he spent his childhood, and meets his old friend Klim Avilov. The collective farm foreman does not understand and does not accept the writer, who did not keep his promised word and did not return after the army, thereby betraying both their friendship and the love of Anichka, who had been waiting for Pavel all this time. Their meeting is the last in their lives.

On their way to a Black Sea resort, a Siberian tractor driver and his wife make new friends and take a detour to Moscow.

The new secretary of the NPP party committee is fighting against high results' progress in equipment operation.

A scientist builds a time machine and accidentally sends his apartment complex manager and a petty burglar to 16th century Moscow, while Tsar Ivan the Terrible travels to 1973.