Police are transporting convicted killer Jack (Bruce Campbell) to a prison when their car crashes into a tree due to a raging snow storm. They are forced to bring Jack to an airport, where pilot Cathy Garrett (Chase Masterson) is refusing to fly until weather conditions calm down. Due to the efforts of a mysterious preacher, it isn't long before Jack and the passengers realize that there are extraterrestrials in their midst. But there is only one way to find out who is human.