In 1970s London, amidst the punk rock revolution, a young grifter named Estella is a clever and creative girl determined to make a name for herself with her fashion designs. She befriends a pair of young thieves who appreciate her appetite for mischief, and together they are able to build a life for themselves on the London streets. One day, Estella's flair for fashion catches the eye of the Baroness von Heilman, a fashion legend who is devastatingly chic and terrifyingly haute. But their relationship sets in motion a course of events and revelations that will cause Estella to embrace her wicked side and become the raucous, fashionable, and revenge-bent Cruella.