Plaster Caster is a potrait of Cynthia Plaster Caster, famous for making moulds of the genitalia of rock stars such as Jimi Hendrix, Pete Shelley of the Buzzcocks, Jello Biafra and others. Artist-turned-groupie or groupie-turned-artist? Decide for yourself as Cynthia Plaster Caster tells her amazing story with the help of some the famous rockers whose "members" she immortalized.