未来的世界，人类已能轻松穿梭于星际之间，在太空中展开商业活动。“诺史莫”是在太空活动的众多星际商业运输船之一。一次，它完成任务满载太空矿石返航地球时，突然收到了一组奇怪的信号，由于这可能是求救信号，飞船接到指令前往信号源地进行搜救。 经过一段飞行后，飞船终于抵达信号源发出的地方。船员们发现此处果然有一艘坠毁的飞船，只是，经过一番搜索，他们发现该船的船员们都早已死亡，化为化石。此时，留在“诺史莫”号的第三指挥官里普利已经破译出该信号并不是求救信号，而是警告信号！队员的生死搏斗开始了！
在不久将来的2025年，奥西讯技术总工艾比·狄克逊，前往修理遏核电设备，根据神秘的线索和一些奇怪行为，艾比对该站两名员工的神智和身份产生了怀疑。
随着人类发展越来越快，产生的垃圾越来越多，环境污染也愈发严重。在全球倡导环保的情况下，PDR生物科技公司利用基因融合技术，创造出了号称能迅速消灭任何垃圾，且安全可控的“超级蟑螂”。公司负责人维克多野心勃勃，想要利用超级蟑螂改变世界，于是租下整艘货轮带着超级蟑螂向全球展示科技。没想到就在前往目的地途中，船上数十万只超级蟑螂突然失控，并疯狂攻击吞噬船上所有生物。
That day is seared into the memory of every human being on the planet: the day the world changed. First came the attack on the Philippines. Within days they spread, as though appearing out of nowhere, striking out at more islands, forging a foothold in the South Pacific. Then came the first attack on U.S. soil - Los Angeles - and the reality became clear: our world was at war once again, but this time with an enemy from beyond our galaxy. Now, months later, the fate of the world hangs in the balance as a mission to strike at a key enemy installation deep in enemy territory goes terribly wrong, and the Marines of the 15th Expeditionary Unit are scattered across the island of New Britain, leaderless, and facing impossible odds. Pacific Theater is the story of those Marines: fresh recruits who journey from their homes across the Pacific to the front lines. It is the story of John Blake, a charming Californian surfer who must find the strength to become a leader, Tracey Gleeson, a physics...
