Wren Choi, Great Xia heir, adopted by Eileen Choi after Emperor Xiao attacked. Humiliated by Zara Choi, Wren trains martial arts, hiding strength for the Martial Imperial Exam. Lana Choi, jealous of Milo's affection, persecutes Wren; Eileen and Milo defend her. Wren defeats Lana at the Exam, becoming Top Candidate. Emperor Xiao reunites with daughter. Wren reclaims identity as Princess Wren of Great Xia, repays father, eliminates enemies.
