In a week Jason Kelly (Zac Efron) and his fiancée Meredith (Julianne Hough) will finally tie the knot. Meredith may be a bit controlling, but wedding planning is serious business and Jason isn’t much help. Once an aspiring photographer, Jason is now an uptight lawyer at his father’s (Dermot Mulroney) practice. Jason’s life (according to his father) is finally taking shape until his grandmother dies. The film starts after the funeral where life goes on for Jason, as he and Meredith are finalizing their wedding plans. Jason’s grandfather Dick (Robert De Niro) is in mourning wants to go to a special vacation spot where he and his wife went over the last 40 years. What seems like a chance for Jason to bond with his grandfather, Dick has other ideas. Allegedly, Grandma’s dying wish, was for Dick to go out and find love again. As a horny septuagenarian, Dick will settle for lust and worry about love later. For Jason, surviving the weekend with his horny grandpa in tow won’t be as easy as it seems.