When a wave of bizarre phenomena hits Houston, Texas, four reluctant strangers are brought together in a surprising battle against deadly spiritual forces.

Something strange is happening in Houston and its rural suburb, Trumbull. It starts with the bizarre mutilation of a farmer's cow, sparking rumors of UFO sightings and alien visitations. It's all an annoyance for the police, who would prefer to focus on the recent murders in the area. Mike Walsh is a journalist with a nagging editor and a troubled marriage who finds himself inexorably drawn into the deeper story creeping up on all who dare get close enough: a grizzled small town police captain, a depressed journalist, a disillusioned pastor, and a little old man. They are unlikely allies against the otherworld.