New Orleans, 1838. When Benjamin January suddenly finds that his services playing piano at extravagant balls held by the city's wealthy are no longer required, he ends up agreeing to accompany sugar planter Henri Viellard and his young wife, Chloë, on a mission to Washington to find a missing friend. Plunged into a murky world, it soon becomes clear that while it is very possible the Viellards' friend is dead, his enemies are very much alive - and ready to kill anyone who gets in their way.