Nineteen-year-old Brooklyn native Tony Manero lives for Saturday nights at the local disco, where he's king of the club, thanks to his stylish moves on the dance floor. But outside of the club, things don't look so rosy. At home, Tony fights constantly with his father and has to compete with his family's starry-eyed view of his older brother, a priest. Nor can he find satisfaction at his dead-end job at a small paint store. However, things begin to change when he spies Stephanie Mangano in the disco and starts training with her for the club's dance competition. Stephanie dreams of the world beyond Brooklyn, and her plans to move to Manhattan just over the bridge soon change Tony's life forever.