Ukraine, 1918. While a Bolshevik army of about 4,000 men, commanded by General Muravyov, advances towards Kyiv, with the aim of taking the city, a small Ukrainian unit of 400 soldiers -about 300 of whom are students- resists near the railway Kruti station. The clash between opposing and unequal forces breaks out, with terrible fury. The young, like the Spartan soldiers, sacrifice themselves in the fight against the aggressors.