Grease (1978) Movie/Musical Teen film/Romance Welcome To The Movies And Television Welcome To The Magic Of Disney And Family Entertainment Experience the friendships, romances and adventures of a group of high school kids in the 1950s. Welcome to the singing and dancing world of "Grease," the most successful movie musical of all time. A wholesome exchange student (Olivia Newton-John) and a leather-clad Danny (John Travolta) have a summer romance, but will it cross clique lines?