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.

A sheltered Amish child is the sole witness of a brutal murder in a restroom at a Philadelphia train station, and he must be protected. The assignment falls to a taciturn detective who goes undercover in a Pennsylvania Dutch community. On the farm, he slowly assimilates despite his urban grit, and forges a romantic bond with the child's beautiful mother.