1918 year. A woman commissar has been appointed from the Central Committee of the Bolshevik Party to the Russian warship Gromoboi, which is ruled by anarchist sailors. The leader of the ship is the anarchist Vozhak. The Commissioner was instructed to reorganize the naval detachment into the First Sailor Regiment. She faces a difficult task: to win the authority of the sailors and eradicate anarchy. Of the remaining officers on the ship — lieutenant Bering, who served in the tsarist fleet on the battleship "Emperor Paul I". He must become the commander and, together with the sent commissar, lead the regiment to the front in the Black Sea region.

A soldier returns to Kyiv after surviving a train crash and encounters clashes between nationalists and collectivists. The story of the suppression of the Bolshevik uprising at the Arsenal factory in Kyiv by the Central Council troops.