After an unusual meteor shower leaves most of the human population blind, a merchant navy officer must find a way to conquer tall, aggressive plants which are feeding on people and animals.
Diplomats, soldiers and other representatives of a dozen nations fend off the siege of the International Compound in Peking during the 1900 Boxer Rebellion. The disparate interests unite for survival despite competing factions, overwhelming odds, delayed relief and tacit support of the Boxers by the Empress of China and her generals.
Test space rockets exploding at liftoff and increased reporting of UFO sightings culminate in a direct attempt by alien survivors of a dead, extra-galactic civilization to invade Earth from impervious flying saucers, using ray-weapons of mass destruction.
