This book offers the first in-depth look at the history, social context, and industrial practices behind this teen musical phenomenon to suggest that social change, especially in terms of gender and sexuality, comes to the surface despite the film's retro setting, blockbuster business model, and apparent nostalgic tone. The vast audience for this film over the last thirty-five years and the various "hopelessly devoted" fandoms indicate that Grease exceeds both the confines of its period and the limits of any one ideological message.