两位科学家在北极苔原发现了一个陨石撞击的地点，但它杀死了一个科学家，感染了另一个。附近的一个基地收容了唯一的幸存者，同时试图了解发生了什么。唯一的幸存者可能不是他们认为的那个人。 Two scientists uncover a meteorite impact site in the Arctic tundra, but it kills one scientist and infects the other. A nearby base takes in the lone survivor whilst trying to understand what happened. The lone survivor may not be the person they think she is.
