Based on Nik Cohn's 1975 New York magazine article "Tribal Rites of the New Saturday Night" and Norman Wexler's 1977 screenplay it inspired, it focuses on Tony Manero, a Brooklyn youth whose weekend is spent at the local discotheque. There he luxuriates in the admiration of the crowd and a growing relationship with Stephanie Mangano, and can temporarily forget the realities of his life, including a dead-end job in a paint store.