Korinna's life gets turned upside down when the ghost of her father suddenly appears. Her father was duke of Kyratia City and he wanted Korinna to marry his warlord, the foreign mercenary Galenos, and inherit his title—but the city's Council has other plans. When the Council denies Korinna's right to rule, she decides to join Galenos' mercenary company and tame a wild marewing in order to take the city by force. But people whisper that the late duke's untimely death was murder, an induced madness that forced him to dance himself to death—and now that madness is spreading. Can Korinna become a marewing rider and conquer Kyratia in time to save everyone?