No other woman embodied sex, drugs & rock 'n' roll quite like Anita Pallenberg in the 1960s and 1970s. The German actress gained fame, among other things, through her relationship with various members of the Rolling Stones. She went from groupie to muse, and from muse to the mother of three children to Stones guitarist Keith Richards. Using private archive footage, the voice of Scarlett Johansson reading from Anita's unpublished memoirs and stories from her companions, her eldest son, the producer Marlon Richards, now brings her life to the screen.