Havana: November, 1958. 18-year-old Katey Vendetto (Romola Garai) brings an innate curiosity and a smattering of Spanish to her new life in Cuba's lush capital, where her father has taken an executive posting at Chrysler. Schooled by her parents in the art of ballroom dancing, Katey is expected to join the smart set of American teenagers who are the Vendettos' neighbors at the exclusive Hotel Miramar. But Katey finds herself drawn instead to the proud, purposeful Xavier (Diego Luna), a pool boy who also happens to be brilliant dancer. Determined to learn the slinky, spectacular moves that Xavier seems to know in his bones, Katey persuades him to partner with her in a prestigious national dance competition at a local country club. Meeting secretly in an out-of-the-way Havana nightclub, Katey and Xavier practice their steps, their bodies aligning in a sensual harmony that mirrors the growing passion between them. As the night of the contest finally arrives, Katey and Xavier are ready to take their place as a couple on the dance floor - unaware that the country club, and the streets of Havana itself, are about to erupt in revolutionary violence.