Linguistics expert Henry Higgins confidently wagers that he can transform Eliza Doolittle, a Cockney flower girl, into a refined lady fit for royalty in just six months. Colonel George Pickering challenges him, and Eliza moves into Higgins's home to undergo intense training, following a financial deal with her father, Alfred, a dustman. As Eliza's language and demeanor evolve, both she and Higgins find themselves changed in unexpected ways, revealing deeper truths about class and identity.