Watch Wedding Thrashers for Free: How to Stream the Movie Online at 123Movies. . When dashing outlaw Brett Harris (Nick Olson) and dimwitted sheriff Frank Hopperkin (Jalen Jensen) learn their siblings are getting engaged, the two mortal enemies resolve to put aside their differences and work together to stop the wedding. Thrills, laughs, and tears abound in this genre defining Northwestern from WRALKAT studios, and the cesspool of comedic genius that is the collective minds of writers Nick Olson and Ryan Garner. Featuring a mind blowing soundtrack by Luke Frugia and Kenna Phillips.