影片通過跨越數千年、不同時空的三條故事線，交織出無形之中彼此呼應的科幻寓言。

 凱特瑞娜·巴爾夫、朱迪·丹奇、杰米·多南、塞倫·希德和新人裘德·希爾主演，講述1960年代末動蕩時期，一個在貝爾法斯特長大的男孩的故事。多南和巴爾夫飾演一對富有魅力的工薪階層夫婦，他們陷入了混亂局勢中，丹奇和希德飾演詼諧活潑的祖父母。

　　在邊境城市圣帕布羅，為一年一度的“墨西哥嘉年華”做準備，加金到來了：強硬，神秘和簡潔。他的任務是：找到同樣神秘的弗蘭克雨果，顯然是為了報復；還是敲詐？FBI探員雷茨也在追捕難以捉摸的雨果。鎮上的每個人都是神秘的，尤其是皮拉，一個神秘的少年，跟隨加金四處，并預感到他的死亡。還包括一個經典的女性法塔萊和一個古老的旋轉木馬與一個粉紅色的馬…

　　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...