Disaster unfolds in Badger, a farming town in the state of New York when a meteor strike contaminates the air, turning it toxic. People begin to die. The entire town drop dead - plants, animals, and humans. Lauren, an exobiologist, tracked by Homeland security, is called in to find answers for this unearthly event. She reluctantly gets involved in the effort to solve the ensuing crisis.Meanwhile, a gigantic tree, an other-worldly object has grown at the site of the meteorite impact. It becomes apparent, once was speculated to be a meteorite is in fact an experimental seed sent to Earth in their search for a new home. The seed is sent from a dying world, a desperate world in order to grow their trees to create a habitable environment for themselves on Earth and then colonize.Soon the air becomes more toxic and the human race stares at the verge of mass extinction.

★ 世界末日降臨！人類並非亡於病毒，而是外星殖民！

★ 繼《異星入境》《異類占領》後，創新「外星人入侵」類型之作

  一顆隕石墜落在紐約州一個農業小鎮，將空氣有毒化。整個小鎮開始死亡，包括動物、植物，以及——人類。蘿倫是一名外星生物學家，被國土安全部徵召去尋找這起神祕事件的答案。她不情願的動身，殊不知這是一場即將到來的巨大危機。此時，一棵異世巨樹生長在隕石撞擊的地點，原來這顆隕石是被送往地球尋找新家的實驗種子。種子來自一個垂死的世界，巨樹是為了在地球上創造適合他們居住的環境，進而展開殖民。很快的空氣變得更加有毒，而人類正處於大規模滅絕的生死邊緣……