Seva, a young schoolboy, is fighting his parents and especially grandmother who want to make child prodigy out of him.

A finding of an old briefcase in a ruined house in 1970s leads to a treasure, hidden in the 1920s.

A poor boy named Tom Canty and the Prince of Wales exchange identities but events force the pair to experience each other's lives as well.

Hearing about the revolution in the hospital, the sailor Gulyavin goes to Petrograd, and from there with a detachment of Ukrainian volunteers he is sent to Ukraine. The troop is joined by cavalrymen under the command of the anarchist Lelka. The chief of staff, Stroyev, reproaches Gulyavin with negligence - you cannot take an untested detachment. However, the desperate courage of Lelka in battle with the White Guards gives Gulyavin not only respect for her, but love...

The young Soviet biologist is forced to contend with ... agents of imperialist intelligence. But, as befits a Soviet citizen, he steadfastly fights against the machinations of the enemy and emerges victorious.