Scarlett has never left the tiny isle of Trisda, longing for the wonder of Caraval, a week-long performance that involves audience participation.

Caraval is Magic. Mystery. Adventure. For Scarlett and her sister Tella, it represents freedom and an escape from their abusive father. When their invitations finally arrive, it seems their dreams have come true. But as soon as they arrive, Tella is kidnapped by the show's mastermind, Legend.

Scarlett has been told that everything during Caraval is just a performance. Yet she becomes involved in a dangerous game of love, magic, and heartbreak. Real or not, she must find Tella before the game ends, and her sister disappears forever.