It’s 1958 and time for the Springfield High School Prom. But the entertainment planned for the big event can’t perform. Enter four girlfriends who call themselves the Marvelous Wonderettes. They step in to save the night with jukebox hits of the 50’s – hits destined to be golden oldies we know and love today. But the story doesn’t end in 1958. Ten years later, the friends – a bit older and more world-wise – attend their high school reunion – and the music continues with hits of the 60’s.