The film tells about the creators of Russian firearms, about the formation and development of the Russian defense industry. Monument to Dmitry Donskoy. Kulikovo field. Monuments in the village of Borodino, in the city of Poltava. Tula Kremlin. Peter and Paul spire. Neglinnaya street in Moscow. Cannon Street. Cathedrals of the Kremlin. Tsar Cannon. Halls of the Artillery Museum in Leningrad. Ancient pishchal XIV-XV centuries. Cannons in the Kremlin. Fragment of the feature film "Ivan the Terrible" (the siege of Kazan). Narva fortress. Mass grave. An old book. Sculpture of Peter I. Models of machine tools. Photos of the arms factory in the city of Tula. Fortress on the Neva River. Fragment of the feature film "Peter I". Engravings. Portraits of Peter I, Elizabeth Petrovna, Count. Shuvalov. Shuvalov's howitzer. Engravings. Portrait of Kutuzov. Factory building in the city of Zlatoust. The city of Petersburg. Museum. Drawings. Shotguns. Breech-loading hunting rifle. Photos of the Perm Arms Factory. Damascus steel blades. Cannons. They squeaked. Steam hammer model. Kulikovo field. Alto. Violin with the inscription "Professor Chernov". Steel pit. Chernov's book. Building, lobby, library of the artillery academy. Portraits of Mayevsky, Durlyakhov, Engelhardt, Drawings. Rifles. Photos of the workshops of the arms factory. Blueprints. Photos of the Red Guards. Nartov's mortar battery. Baranovsky's cannons. Portrait of Baranovsky. Oath of cadets.