一群處於邊緣人的學生，在一次偶然的機會下，發現有一種不明的生物體出現在校園中，他們拿去做化驗時，發現那是非常奇怪的物種，同時遇水就會產生旺盛的活動力，並且會不斷的分化。 接著校園中不斷地出現怪事，老師們的行徑都跟以往大不相同，最後他們發現許多老師和所謂的乖乖牌學生都被異形寄身。這樣的理論當然被其他的人嗤之以鼻，他們只好自己去求證，同時這群學生也必須躲避異形老師的追殺。 危機步步逼近，被異形寄生的人已蔓延到全校，而最恐怖的是他們搞不清楚身邊最親近的同學，究竟還是不是人類？最後他們發現對付異形的致命武器，就是他們自製的毒品，他們要如何才能消滅這些入侵人類並計畫控制地球的恐怖異形？
《肌膚之侵》透過外星人的視野展現人類的貪婪與自私。史嘉莉喬韓森在片中將化身為外星生物，在蘇格蘭展開公路之旅，以艷麗的外型迷倒眾生，堪稱是好萊塢科幻版《畫皮》。 「她」說著挑逗的話語、扭動性感的身軀誘惑單身男子，進而讓他們陷入致命的圈套，但很快地也意識到自己的良知問題。隨著在地球待的時間越長，「她」更因人類的溫度和行為漸漸起了變化… 史嘉莉喬韓森在片中還將有戴上黑色假髮、外穿毛草，正面卻一絲不卦的戲碼，尺度遠比以往作品更大膽。
When Environmental Protection Agency inspector Steve Malone travels to a remote military base in order to check for toxic materials, he brings his family along for the ride. After arriving at the base, his teenage daughter Marti befriends Jean Platt, daughter of the base's commander, General Platt. When people at the base begin acting strangely, Marti becomes convinced that they are slowly being replaced by plant-like aliens.
A young couple purchase their new home to start a life together, only to find out the elderly couple next door have other plans for them.
Edinburgh surgeon Dr. Robert Knox requires cadavers for his research into the functioning of the human body; local ne'er-do-wells Burke and Hare find ways to provide him with fresh specimens...
Summer, unhappy with her boyfriend, receives a mysterious email inviting her out to a spiritual obstacle course. Summer gathers her four friends, each battling a dilemma of their own, to drive to the Sedona Desert, where they are promised this “vortex” will improve their lives. They embark on these courses with the help of their uncanny guide Hermes, who leads them into a series of unusual practices. Little do they know they are being monitored by mysterious hooded entities, eager to take over their bodies.
Mona and her ex-girlfriend, Jules, broke up six months ago and they still can't manage to have a conversation that doesn't dissolve into an argument. It wouldn't be such a problem if they didn't work in neighboring retail shops and have to see each other every day. Meanwhile, something weird is going on with the residents of their small town. Some of them are getting sick, others are acting a little less human and a lot more like robots. Can Mona and Jules set aside their relationship drama long enough to avoid the body snatching invaders?
A bizarre visit with an estranged friend, an unexplained scar, and vivid, violent dreams of an ominous tunnel have Sandy worried something might not be right with her. As she begins to feel sick she becomes more and more paranoid that something is living inside her. Something that wants to become her.