Actor Zac Efron and the cast of Dirty Grandpa were spotted on location on Monday in Atlanta, Georgia filming a funeral scene. Efron along with Julianne Hough, Robert De Niro, and Dermot Mulroney were all spotted walking to and from basecamp into the church. In the film, Robert De Niro plays a perverted former Army general who thinks his grandson is about to marry the wrong woman, and so he tricks him into driving down to Florida for spring break. Efron takes on the role of the uptight twenty-something grandson, with I Give It a Year director Dan Mazer getting behind the camera. Parks and Recreation star Aubrey Plaza has also just signed on to play Efron’s love interest in the flick.