2015年 - 最後一天。一艘巨大的太空船，穿破大氣層，墜落在大西洋。全世界都經由電視轉播，看見了這個景像，也確認了外星生命的存在。年輕的醫護員格雷哥貝克，為了對抗侵略者，保衛自己的星球，加入了特種部隊成為軍醫，協助運送機密武器至敵方領土的南艾伯塔。當武器失效後，他們才發現自己被重重包圍，寡不敵眾。貝克不顧一切地想回到妻子身邊，但被惡夢纏繞的他，卻發現自己在這場戰爭中的角色，遠比當初所想像的更為重要。

2015年某一天，一艘庞大的外太空飞船穿越大气层落在西太平洋，全世界媒体都证实了这一消息，一支年轻的医疗队决定加入对抗这一外来生物。当他们的直升机被枪炮击落后，小队发现他们自己被包围，并遭遇困扰，整日被噩梦打扰，最终明白这是一场超越想象的战斗。

Confirmation of extraterrestrial life appears on television screens across the world as a massive spacecraft breaks through the atmosphere on a crash course into the Atlantic Ocean. A young paramedic, Greg Baker, signs up to fight for his planet against the invaders. Baker joins Special Forces members as the squad medic as they escort a classified package by chopper over enemy territory. When their chopper is shot down they find themselves surrounded and outnumbered. Desperate to return to his wife's side and haunted by nightmares, Baker find that his role in the war has quickly become much larger than he could have ever imagined. The mysterious package may be the key to turning the tide of the war, and possibly to saving all of humanity, but Baker must decide whether to protect it or sacrifice it to ensure his own survival.

Dans une guerre sans merci, la terre est envahie par des aliens. Derrière les lignes ennemies, une unité de soldats d'élite survit à un crash d'hélicoptère et tenet de sauver le monde.