LOS ANGELES, Oct 29 — Believe it or not, Zac Efron and Robert De Niro are starring in what can easily be labelled as a spring break comedy called “Dirty Grandpa”.

In the movie, Efron plays uptight Jason Kelly who is about to get married to Julianne Hough. But just before the wedding, his foul-mouthed retired Army general grandfather (De Niro) tricks Efron into driving him to Florida for some sunny and shirtless spring partying with the old man.

The movie also stars Aubrey Plaza, Dermot Mulroney, Zoey Deutch and Adam Pally among others.   

“Dirty Grandpa” is set to open in cinemas on January 22, 2016.  

Robert De Niro and Zac Efron play a grandfather and grandson duo who head to Florida for spring break in ‘Dirty Grandpa’.