grease

A musical about teens in love in the 50's! It's California, 1959 and greaser Danny Zuko (John Travolta) and Australian Sandy Olsson (Olivia Newton-John) are in love. They spend time at the beach, but when they go back to school, what either of them doesn't know is that they both now attend Rydell High. Danny's the leader of the T-Birds, a group of black-jacket greasers while Sandy hangs with the Pink Ladies, a group of pink-wearing girls led by Rizzo. When they clash at Rydell's first pep rally, Danny isn't the same Danny at the beach. They try to be like each other so they can be together.  

It was successful both critically and at the box office; its soundtrack album ended 1978 as the second-best selling album of the year in the United States.