Bad Grandpa .5 gives you a whole new perspective on the world of Irving Zisman with bonus scenes and pranks also featuring Spike Jonze as “Gloria” and Catherine Keener as Irving’s wife “Ellie”, plus a look at the evolution of Johnny Knoxville’s naughty alter-ego, the makeup effects, and a behind-the-scenes peek at the idiocy it takes to make a hidden camera movie in public.

86-year-old Irving Zisman is on a journey across America with the most unlikely companion: his 8 year-old grandson, Billy.

The neglected child of parents living on a commune, Victor is helpless to resist the atmosphere of sex and drugs that permeates his world, but he”s smart enough to know that if he is going to survive, he has to get out.

A police officer must clear his son’s name in the murder of a beautiful woman amidst the exciting and erotic world of heavy metal night clubs.