A peaceful country club becomes the hunting ground for a demonically possessed lawnmower with a taste for human flesh.

After bowler Roy Munson swindles the wrong crowd and is left with a hook for a hand, he settles into impoverished obscurity. That is, until he uncovers the next big thing: an Amish kid named Ishmael. So, the corrupt and the hopelessly naive hit the circuit intent on settling an old score with Big Ern.

While protecting an Amish boy—the sole witness to a brutal murder—and his mother, a detective is forced to seek refuge within their community when his own life comes under threat.