Russia goes to war against an alliance of the Ottoman Empire, France, and Britain from October 1853 to February 1856, and the fighting concentrates around the Russian naval base at Sevastopol, which the allies besiege for nearly a year. The film covers the war's set-piece disasters, including the Charge of the Light Brigade, where a mounted British brigade rides into entrenched Russian guns on a misread order, and traces how the conflict's outcome marks a real decline in Ottoman power even though the Ottomans are nominally on the winning side. It also follows the war's afterlife outside the battlefield: Florence Nightingale's nursing work at the military hospitals reshapes how wounded soldiers are treated, and the war becomes raw material for literature, feeding into Tolstoy's War and Peace and Tennyson's poem on the Light Brigade. The result is a conflict remembered less for what it won or lost than for what it changed in medicine and in how war gets written about.