"Against the wishes of his parents (who are in the midst of a messy divorce), a young boy steals the ashes of his dead Grandfather and runs away into the wilderness with his dog. The boy is determined to fulfill his beloved Grandpa's dying wishes and spread his ashes atop a remote mountain. Along the treacherous journey, the boy and the dog are accompanied by the ghost of his Grandpa, who helps them on their journey, brings the family back together...

Johnny Knoxville reprises his Jackass role as 86-year-old Irving Zisman. Zisman is on a journey across America with the most unlikely companion: his eight-year-old grandson Billy. The duo will encounter male strippers, disgruntled child beauty pageant contestants, funeral home mourners, biker bar patrons, and a whole lot of unsuspecting citizens. Real people in unreal situations, making for one really messed up comedy.