Adapted from the best-selling memoirs of members of the Sex Pistols, the most influential punk rock band in the UK, the film takes the audience into the dangerous and lustful world of British punk music. Toby Wallace plays the young Steve Jones, Louis Partridge plays the bassist Sid Vicious, and Emma Appleton plays Sid's girlfriend Nancy. Jacob Slater plays the drummer Paul Cook, Fabian Frankel plays the bass guitarist Glen Matlock, Dylan Llewellyn plays Wally Nightingale, one of the founding members of the Riverside Band, the predecessor of the Sex Pistols, Maisie Williams plays the punk idol Jordan, Anson Boone plays the musician John Lydon, and Sydney Chandler plays the rock musician Chrissy Head.