The story of three young Russsian adventurers against the background of post-revolutionary skirmishes in the Ukraine. The boys get mixed up with a wounded commissar and a marauding White Russian officer. They find themselves in all sorts of predicaments before the Reds arrive to save the day, and become the mascots of a troop of Bolshevik cavalry.

The medications need to be delivered to the settlement in the Far North. Pilot Nastya Koroleva, despite the storm, is planning to fly...