Johnny Knoxville reprises his 'Bad Grandpa' role from the popular American reality show 'Jackass' for this one-off narrative-driven feature directed by long-time collaborator Jeff Tremaine. 86-year-old Irving Zisman (Knoxville) takes his grandson Billy (Jackson Nicoll) on a road trip across the United States to reunite him with his father. Along the way, the trouble-making duo enter a children's beauty pageant and visit a funeral home while unleashing a bevy of pranks on an unsuspecting public.