During the 1899 to 1901 Boxer Rebellion, Peking is an open city with the Chinese, and several European countries vie for control. The Boxers, who oppose Christianity and the western powers, who still exercised complete sovereignty over their compounds and their citizens. The head of the U.S. garrison is Marine Major Matt Lewis (Charlton Heston), an experienced China hand who knows local conditions well. He meets exiled Russian Baroness Natalie Ivanoff (Ava Gardner), with whom he falls in love. The political situation is tension-filled with the Boxers having the tacit approval of Dowager Empress Tzu-Hsi (Dame Flora Robson). When the Boxers attack the foreigners, Major Lewis, working with the senior officer from the British Embassy, Sir Arthur Robertson (David Niven), tries to keep them at bay pending the arrival of a relief force.
—garykmcd