Dirty Grandpa – Now Playing. Find Showtimes! http://Tickets.DirtyGrandpa.movie. Starring Robert De Niro, Zac Efron, Aubrey Plaza, Zoey Deutch, Julianne Hough, Jason Mantzoukas, Danny Glover, Adam Pally, and Dermot Mulroney. #DirtyGrandpa #YouDontKnowDick http://DirtyGrandpa.Movie http://facebook.com/DirtyGrandpa http://twitter.com/DirtyGrandpa http://instagram.com/DirtyGrandpa Jason Kelly [Zac Efron] is one week away from marrying his boss’s uber-controlling daughter, putting him on the fast track for a partnership at the law firm. However, when the straight-laced Jason is tricked into driving his foul-mouthed grandfather, Dick [Robert De Niro], to Daytona for spring break, his pending nuptials are suddenly in jeopardy. Between riotous frat parties, bar fights, and an epic night of karaoke, Dick is on a quest to live his life to the fullest and bring Jason along for the ride. Ultimately, on the wildest journey of their lives, “dirty” Grandpa and his uptight grandson discover they can learn from one another and form the bond they never had. This outlandish comedy also stars Julianne Hough, Aubrey Plaza, Dermot Mulroney and Adam Pally.