When the Universe decides what it wants, it's pointless to resist. With his family's life at stake, Joseph Steadman finds himself the unwilling test subject of a maniacal scientist in a battle that could save the world, or destroy it.

After returning from a wedding reception, a couple staying in an isolated vacation house receive a knock on the door in the mid-hours of the night. What ensues is a violent invasion by three strangers, their faces hidden behind masks. The couple find themselves in a violent struggle, in which they go beyond what either of them thought capable in order to survive. Written by Anonymous