天外讯号精彩剧情讲解：无论昏暗多么漫长，总会有人为你点亮一盏灯。Radio astronomers discover a mysterious signal in the deep sea that could be contact with extraterrestrials. After several terrifying manifestations threaten their beliefs, the team must fight to survive the ultimate evil.天外讯号高清完整版免费在线观看。