1991-Val, a teenager from a conservative family, has grown up dreaming of becoming a ballerina, but recently something has changed. She's begun feeling pressure to conform to a specific idea of beauty, body type, and a personality that just doesn't fit.

Val meets Kat, a smart, witty girl that doesn't take any crap off anyone. Kat introduces Val to punk rock. Along with Rudie, another new friend, the three form an all-girl punk band they ironically name The Proper Ladies.

Soon Val and her friends find themselves caught up in a movement with other girls also starting bands-also finding their voice. Collectively, these riot grrrls discover that their songs ring out loud and powerful, and for Val, there's no going back.