4K UHD - He's lewd. He's crude. He's Grandpa. Robert De Niro plays the brash, titular character who takes it upon himself to show his uptight grandson a good time. Zac Efron plays Jason Kelly, a lawyer ready to walk down the aisle to marry his boss' daughter. With just one week to go before the wedding, Grandpa Dick tricks Jason into going on a road trip, and they arrive in Daytona Beach in time for spring break. Frat parties and wild hijinks ensue as Grandpa Dick takes Jason on the adventure of a lifetime, which he'll never forget. Also starring Julianne Hough, Aubry Plaza, and Dermot Mulroney.