In the Great Xia dynasty, martial arts are led by the Mu family’s martial arts style, Mu Family Fist. However, the only heiress, Mu Wushuang, disappeared from the world after being attacked by a powerful force from Dongying years ago. Four years later, the Dongying organization resurfaces, determined to challenge the warriors of Great Xia. Mu Wushuang, bearing a heavy responsibility, faces the three greatest martial artists of Dongying alone. Yet, the true danger comes not from the enemy, but from those closest to her...