A pre-wedding reunion descends into a psychological nightmare for a group of college friends when a surprise guest arrives with a mysterious suitcase.

When a college student unfriends a mysterious girl online, she finds herself fighting a demonic presence that wants to make her lonely by killing her closest friends.

As a new day begins in the town of Silverton, its residents have little reason to believe it will be anything other than ordinary. Mother Nature, however has other plans. In the span of just a few hours, an unprecedented onslaught of powerful tornadoes ravages Silverton. Storm trackers predict that the worst is still to come, as terrified residents seek shelter, and professional storm-chasers run toward the danger, hoping to study the phenomenon close up and get a once-in-a-lifetime shot.