The story follows Rebecca Clarkson, suffering from demonic attacks after playing with an Ouija board one night. Fearful people will think she's crazy, or lying, she documents her experiences in a video blog on her webcam over the course of a week. In a series of escalating events, shadowing figures appearing and disappearing, the creepy factor grows. Soon the supernatural activity becomes violent, and Rebecca is repeatedly attacked by the demonic forces until finally, evil takes possession of...

It is a normal day for everyone, until President of the United States James Dale (Jack Nicholson) announces Martians have been spotted circling Earth. The Martians land and a meeting is arranged, but not everything goes to plan, and the Martians seem to have other plans for Earth. Are they just misunderstood beings or do they really want to destroy all of humanity?