When a ghost ship is found adrift after attempting to contact the isles of Aimia, Queen Fen of Thaylena wants answers. Navanni Kholin of Urithiru is also interested, since Aimia seems to be holding one end of an Oathgate that nobody's been able to reach to activate yet. And Thaylen merchant Rysn Ftori wants to get to the islands to find a cure for her pet larkin Chiri-Chiri, who is not only sick but may be the last of her kind. So Rysn (and her ragtag crew, of course) set off on an exploratory mission to a land no one has set foot on in living memory. By Brandon Sanderson.