Film about a branch of the Rivne Museum of Local Lore, the Cossack Graves Museum-Reserve in the village of Pliasheva. It tells about the complex of buildings and monuments on the museum's territory: St George's and St Michael's Churches, the sarcophagus tomb of the Cossacks who fell in the Battle of Berestechko (1651), and the objects of the museum's exhibition. The film recalls the confrontation between General Dmytro Ryabyshev's 80th Mechanised Corps and General von Kleist's 1st German Panzer Group in 1941 during World War II.