Tony Manero (John Travolta) doesn't have much going for him during the weekdays. He still lives at home and works as a paint store clerk in his Brooklyn, N.Y., neighborhood. But he lives for the weekends, when he and his friends go to the local disco and dance the night away. When a big dance competition is announced, he wrangles the beautiful and talented Stephanie (Karen Lynn Gorney) to be his partner. As the two train for the big night, they start to fall for each other as well.

When they arrive at college, socially inept freshmen Larry (Thomas Hulce) and Kent (Stephen Furst) attempt to pledge the snooty Omega Theta Pi House, but are summarily rejected. Lowering their standards, they try at the notoriously rowdy Delta Tau Chi House, and get in. The trouble is, the college dean (John Vernon) has it in for the Deltas. He has put them on "Double Secret Probation" and secretly assigned Omega's president (James Daughton) the task of having their charter revoked.