Grease
The film opens with an animated credits sequence accompanied by the theme song, "Grease", composed expressly for the film by Barry Gibb of the Bee Gees and performed by Frankie Valli.
In 1958, during their summer vacation, Danny Zuko (Travolta) and Sandy Olsson (Olivia Newton-John) meet at a beach and begin to fall in love. Instead of returning to Australia at summer's end, however, Sandy enrolls at Rydell High School as a foreign-exchange student, where Danny is a student. So is Sandy's new friend Frenchy (Didi Conn), a member of the schoolgirl clique "The Pink Ladies". Danny is the leader of the boys' gang, "The T-Birds". Kenickie, second-in-command of the T-Birds (and Danny's best friend), encourages Danny to tell them about his holiday experiences, while the Pink Ladies likewise persuade Sandy. This results in "Summer Nights."
Encouraged by a preppy school spirit girl, Sandy joins the Rydell cheerleaders. The Pink Ladies decide to reunite Danny and Sandy, but Danny wants to protect his cool image, and his behavior towards Sandy causes her to storm off in tears.
Frenchy attempts to cheer Sandy up by inviting her to a slumber party at her house with the rest of the gang, but Betty Rizzo (Stockard_Channing) soon gets fed up with Sandy's goody-two-shoes behavior. Frenchy announces that she is dropping out of Rydell and going to beauty school. Rizzo lampoons Sandy, singing the sarcastic "Look at Me, I'm Sandra Dee". When the T-Birds arrive outside Frenchy's house, Rizzo and Kenickie (Conaway) flirt then leave. After the party splits up, Sandy decides that she still loves Danny, in spite of everything, and sings "Hopelessly Devoted to You", a poignant love song that was added for the movie and was a big hit as a single. Rizzo's and Kenickie's passionate back-seat love-making is interrupted when the leader of a rival gang, Leo (Dennis Cleveland Stewart) of The Scorpions, and his girlfriend, Cha Cha DiGregorio (Annette Charles), damage Kenickie's car.
Whilst repairing the car, the T-Birds fantasize about what it will look like after a paint job, singing "Greased Lightning".
Danny meets Sandy at the Frosty Palace (the local ice cream parlor that serves as the local teens' hangout), and tries to apologize for his poor deportment. When he sees that Sandy is sharing a soda with a jock (Lorenzo Lamas), Danny decides that he's going to join the jocks to impress her. After disastrous performances in basketball, wrestling, and baseball - where he keeps losing his temper when he loses - he finally finds his ideal sport in cross country, until the sight of Sandy distracts him and he falls. Sandy comes to see if Danny is all right, and they are seemingly reconciled.
Danny attempts to go to the Frosty Palace with Sandy so that they can be alone and not worry about ruining his image in front of his friends. But the T-Birds and Pink Ladies are already there, and Danny finds it hard to charm Sandy without looking like a sissy in front of his friends. After everyone leaves the malt shop, Frenchy imagines a guardian angel telling her what to do with her life, and Frankie Avalon sings "Beauty School Dropout".
Later, Danny takes Sandy to the school's dance, where the TV show National Bandstand plans to broadcast live from the school. When Kenickie asks Cha Cha to the dance, Rizzo retaliates and asks out the rival gang's leader Leo. The dance features several well-known songs from the '50s covered by Sha Na Na. During the dance-off, Rizzo leaves in a huff, seeing Kenickie dancing with Cha Cha, and Danny and Sandy are one of the few still in the dance-off. But soon, Sonny pulls Sandy away from Danny, and Cha Cha starts dancing with Danny. Sandy realizes that Cha Cha was one of Danny's past girlfriends — and a much better dancer. Sandy leaves the gym upset, and Danny and Cha Cha win the contest. When they share their spotlight dance, the T-Birds (minus Kenickie) run in front of the camera and moon the crowd as "Blue Moon" is playing.
Later, Danny takes Sandy to a drive-in movie, apologizes for leaving her, and gives her his class ring. Inside the drive-in toilets, Rizzo tells Marty that her unprotected sex with Kenickie has come back to haunt her — she has missed a period. One of the T-Birds overhears and gets the story, leading to a chain effect that makes it common knowledge. When Kenickie asks Rizzo why she didn't tell him about it, she lies out of anger and tells him it isn't his. Back in the car, Danny starts trying to make out with Sandy. She raises a ruckus, throws back his ring (which she calls a "piece of tin"), and leaves. Danny laments losing Sandy again, and reveals the true extent of his feelings for her in the song "Sandy" — he is helpless without her.
Because of a mishap before a race in the Los Angeles River, Danny races Leo in Kenickie's place while Sandy sits on the hill watching. While she is happy to see Danny win the neck-and-neck race, she has misgivings about her own image, reflected in the song "Look at Me, I'm Sandra Dee (Reprise)". As the T-Birds and Pink Ladies (Betty Rizzo did not show up) celebrate with Danny, Sandy asks Frenchy's help in winning Danny's heart.
On the last day of the school carnival, Danny has followed through on his track jock plans and arrives in a preppy letter sweater. However, Sandy arrives in full greaser-girl apparel — no more goody-two-shoes. Danny falls at her feet and the two reunite, singing the upbeat "You're the One That I Want" (another song added for the movie, and a hit single before the movie even came out). Rizzo and Kenickie get together after Rizzo has screamed from the Ferris wheel that she is not pregnant after all, and everyone sings the big finale, "We Go Together." Sandy and Danny fly off in a car and disappear into the sky, probably an image to symbolize how being in love can make one feel like he or she is flying.
