Footfall

Theyfirstappearasaseriesofdotsonastronomicalplates,headingfromSaturndirectlytowardEarth.Sincetheringedplanetcarriesnolife,scientistsdeducethemysteriousshiptobeavisitorfromanotherstar.Theworld'sfranticeffortstosignalthealiensgounanswered.Thefirstcontactishostile:theinvadersblastaSovietspacestation,seizethesurvivors,andthendestroyeverydamandinstallationonEarthwithahailofasteriods.NowtheconquerorsaredescendingontheAmericanheartland,demandingservilesurrender--ordeathforallhumans.