WATCH: New trailer for Dirty Grandpa film

Two hilarious actors from two separate generations are coming together to make a new comedy film.
Zac Efron and Robert De Niro will be starring alongside one another as grandson and grandpa in Dirty Grandpa.
Directed by Dan Mazer and written by John Phillips, Efron and De Niro go on a road trip together days before Efron's character's wedding.
Efron's character, Jason Kelly, is set to marry an uptight woman who tries to have a considerable amount of control over his life. A few days before the wedding, De Niro's character, Dick Kelly, convinces his grandson to go on a trip to Daytona, where he parties hard with his grandfather, and begins to question his engagement.
The comedy film will be released in Irish theatres March 18.