Zac Efron in buddy road trip comedy with Robert de Niro in “DIRTY GRANDPA”

Zac Efron and Robert De Niro go on a wild familial bonding in “Dirty Grandpa,” where Edron plays young, buttoned-up, conservative lawyer Jason Kelly who is in the final stages of preparation for a picture-perfect wedding to his seemingly ideal fiancée Meredith Goldstein (Julianne Hough) when Jason’s beloved paternal grandmother passes. Though it’s the week before his big day, everyone’s concerned for Grandpa Dick (Robert De Niro), suddenly alone for the first time after 40 years of marriage.