An extraterrestrial alien arrives on Earth at a turning point in human evolution and must confront his own past to determine our future.

根据Whitley Strieber的畅销小说《2012: The War for Souls》改编.
2012年12月21日，是玛雅历上的最后一天。很多UFO理论也认为2012年将是外星人降临的日子（参见X-FILES）。天主教圣malachy预言最后教宗将于27日抵达2012年煽动世界末日。不少科学家也认为2012年，地球将因为地轴的改变而面临一场不可避免的灾难的肆虐。
所以麦克贝已经在摩拳擦掌了，一个针对2012年的科幻片正式启动了，本片的类型是家庭动作，他相信好莱坞的同行很快就会跟风。故事围绕在玛雅历最终日前外出度假的一个家庭开始。

Season three continues the rabbit-hole journey of three unlikely souls — FBI Agent Olivia Dunham, Fringe Scientist Walter Bishop and his jack-of-all-trades son Peter — through mind-bending investigations, parallel realities and threats growing in the borderlands between science and the unimaginable.

The fourth season of the American science fiction television series Fringe premiered on Fox on September 23, 2011 and concluded on May 11, 2012, consisting of 22 episodes. The series is produced by Bad Robot Productions in association with Warner Bros. Television. The show was officially renewed for a fourth season on March 24, 2011.

Unable to police a world in which science has advanced beyond our wildest dreams — and nightmares — FBI Special Agent Olivia Dunham seeks help from brilliant but damaged scientist Dr. Walter Bishop and his estranged son with a dark past, Peter. Under the direction of Agent Phillip Broyles, they solve gruesome mysteries and prevent imminent attacks.

As the first season begins, FBI Special Agent Olivia Dunham is called in to investigate a mysterious outbreak that nearly kills her partner. The only person with any answers is an institutionalized scientist, Dr. Walter Bishop who can only be released under the care of his estranged son. Together, the three discover that the answer to this mystery is only a small piece of a much larger, more shocking truth.