en Cuevana 3. Ershi's sister, Marussia, a sailor of the Black Sea Squadron, was seduced by Baron von Vogel. Coincidentally, he is assigned to the same ship where he serves the nation. The situation on the ship is tense. The arbitrariness of the officers causes discontent among the sailors. Only the ship's mechanic, Menshevik Avalov, weakly defends the interests of the sailors.