一系列外星球体降落在地球上，轻而易举地摧毁了它们所经过的一切，科学家和美国总统必须找到阻止外星人入侵的方法。
An American cycling team trains at a remote European lodge. Teammates start dying mysteriously. Rivals Connor and Greg battle to survive and uncover the cause behind the team's demise.
