影片根据1993年同名射击游戏改编而成。　　2145年火星舰队总部接到从该地区传来的微弱求救信号，而在那里科学探测站正在进行着遗传密码破解的重要实验，一旦该地区失去控制，无疑将会造成整个人类的一场大劫难。特别行动队队长瑞博尔（卡尔·厄本 Karl Urban 饰）、士官长萨吉（道恩·强森 Dwayne Johnson 饰）带着六名队员迅速登陆以救援基地内的幸存者，可当他们进入基地时，发现实验室不仅一片狼藉，而且实验室里满是怪物。更可怕的是，这些行为怪异的生物并非来自外星，而是受到某种未知病毒感染后的人类！面对随时可能被感染的危险，萨吉必须和他的队员们利用手中的每一件武器，深入到实验室中心，找出真相，完成他们的使命。RRTSRTS惟一可以做的是把通往地球的通道用免疫隔离系统封锁，再背水一战，用尽身上每一件终极武器，将这班魔怪一一歼灭……

　　At the beginning of 2259, Captain John Sheridan replaces Sinclair as the military governor of the station. He and the command staff learn that the death of President Santiago was actually an assassination masterminded by Vice President Clark (who assumed the Presidency upon Santiago's death). A conflict develops between the Babylon 5 command staff and the Psi Corps, an increasingly autocratic organization which oversees and controls the lives of human telepaths. Commander Ivanova, the second-in-command of the station, is secretly a latent telepath who has illicitly avoided registering with the Psi Corps.　　The Shadows, an ancient and extremely powerful race who have recently emerged from hibernation, are revealed to be the cause of a variety of mysterious and disturbing events, including the attack on the Narn outpost at the end of 2258. Centauri Ambassador Londo Mollari unknowingly enlists their aid through his association with the mysterious Mr. Morden in the ongoing conflict with the Narn. The elderly and ailing Centauri emperor, long an advocate of reconciliation with the Narn, dies suddenly while visiting Babylon 5. A number of conspirators, including Londo Mollari and Refa, take control of the Centauri government by assassinating their opponents and placing the late emperor's unstable nephew on the throne. Their first act is to start open aggression against the Narn. After a full-scale war breaks out, the Centauri eventually conquer Narn in a brutal attack involving mass drivers, outlawed weapons of mass destruction. Towards the end of the year, the Clark administration begins to show increasingly totalitarian characteristics, clamping down on dissent and restricting freedom of speech. The Vorlons are revealed to be the basis of legends about angels on various worlds, including Earth, and are the ancient enemies of the Shadows. They enlist the aid of Sheridan and the Babylon 5 command staff in the struggle against the Shadows.