The Castaway Cowboy

When Costain, a shanghaied Texas cowboy, jumps ship off the coast of Kauai, a 12-year-old-boy rescues him from drowning. While Costain waits to return home, he decides to help the boy's mother's failing potato plantation by turning it into a cattle ranch.

But first, he must outwit an unscrupulous businessman and an evil witch doctor, and turn the easygoing islanders into ridin' and ropin' cowpokes.