Ling Chang Jin, deeply resentful due to his elder sister's death, holds a grudge against Yilan Butterfly Slaves. With the assistance of Ling Chang Feng, he captures the Yilan Crown Prince, who had plotted the New Year's Eve attack. From the Yilan Crown Prince's confession, Ling Chang Jin learns that Princess Bao Zhu possesses Kirin Blood that can nourish the Butterfly Curse.
