A weapons inspector in Iraq discovers a biological agent of mysterious origin, propelling him into a shadowy world where truth is deadly.
At a rented house, Eddie and his best friends unite for his bachelor party. The next day, though, a fight for sanity and survival begins when they discover there are snipers outside the house and a ghost inside, none of whom want the guys to leave.
When his girlfriend ditches him at a friend's house, a carefree man strikes up a new friendship that eventually becomes a brotherhood.