在一场小型流星雨过后,科学家Steve发现一颗致命的小行星正冲向地球。他和团队必须迅速追踪这颗流星的轨迹,同时还得应对政府和军方的干涉。为了拯救全人类,他必须冒着失去名声、事业甚至生命的风险,挽救这颗直扑地球的巨大行星。A deadly meteor storm has been labeled a one-time celestial occurrence, but astrophysicist Steve Thomas believes something worse is yet to come. After discovering his asteroid tracking satellite is secretly being used for military surveillance, Steve leaks the truth to the press, and it costs him his reputation, his job, and his friends. With the backlash of being a whistle-blower, the pressure threatens to tear his family apart, just when Steve discovers a threat to the entire planet: a giant dark asteroid invisible to current detection systems will soon strike the Earth. Barred from using his own satellite to prove the asteroid's existence, Steve is forced to work in the shadows in a desperate attempt to save humanity.