Zac Efron Hits the Road in 'Dirty Grandpa' Teaser Poster

Zac Efron fills up the car at a gas station on the new teaser poster for his upcoming movie Dirty Grandpa.

The 28-year-old actor stars alongside Robert De Niro in the upcoming movie and they are seen in a couple new images that were just released from the film.

Aubrey Plaza, Zoey Deutch, and Julianne Hough all star in the movie, hitting theaters on January 22.

Here is the full synopsis: Jason Kelly (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 (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.