In this suspenseful sci-fi thriller, a group of young Americans visiting Moscow wage a desperate fight for survival in the face of an apocalyptic alien invasion. Composed of pure energy, the invisible extraterrestrials show no mercy as they incinerate helpless human beings merely by touching them. The small band of survivors, armed only with their courage and ingenuity, join forces with an eccentric Russian scientist, who may hold the key to stopping the alien onslaught. But with time running out and hope fading, they may only get one chance to save themselves... and the planet.