Russian-Turkish war. The Russian corps, abandoned by everyone, was locked in the Shipka Pass. In combat conditions, human relations between soldiers and officers are worth their weight in gold. Artillery lieutenant Count Suzdalev and Cossack centurion Bily were brought up differently, but they have common ideas about honor and morality - loyalty to duty and love for the Motherland are not empty words for them. Front-line friendship grows stronger when comrades find themselves deep in the Turkish rear, where, going through all the trials, the officers will have to remain faithful to their principles.