In a make-or-break effort to save his relationship with his girlfriend, Mark purchases a new house and immediately begins to find dead animals out in the front lawn beneath the tall palm tree. He soon discovers a family of crows living in the tree are responsible for all the dead bodies. But Mark has a new nest of his own to worry about and when he attempts to drive away the crows, he discovers they are far more intelligent, determined and dangerous than anyone might have thought.