Scarlett Dragna has had one desire all her life: to visit a Caraval. These interactive events put on by magician and entrepreneur Legend are world famous but very exclusive. It's therefore a huge surprise when Scarlett and her sister Tella receive tickets. These will take them away from their sadistic father and prison-like island home for the first time. Caraval is never what one expects though and when Tella is kidnapped, Scarlett experiences the sinister side of a game in which nothing is what it seems.