I know someone told you it's not original, but didn't tell you why.
The Fall Guy was actually a 1980's tv show about stunt performers that lasted 5 seasons.
From Wiki - "The Fall Guy is an American action-adventure television series produced for ABC and originally broadcast from November 4, 1981, to May 2, 1986. It stars Lee Majors, Douglas Barr, and Heather Thomas as Hollywood stunt performers who moonlight as bounty hunters."
The movie is apparently only loosely based on the show, but it is still loosely based on the show.