Wu Lan has been following her mother Wu Ju since childhood to challenge various combat arenas. This is their skill for making a living, defeating opponents on the arena and earning generous bonuses to maintain their livelihood. Until an underground event in ThailandDuring the boxing match, I encountered a Japanese martial arts master - Second Rank Tang You. The good days of mother and daughter who rely on each other have come to an end. Wu Ju was originally evenly matched with the Second Order Hall, but with the help of referee Wang Jun, intentionally or unintentionallyWu Ju was treated unfairly and was repeatedly hit by the Second Rank Tang You with foul techniques, falling to the arena and dying from serious injuries. The young Wu Lan knew something was amiss and ran up to the stage, holding her mother who had gradually weakened without any rest,Crying loudly but powerless. Xiaowulan gritted her teeth and looked at the proud second level Tang You, promising to avenge her mother.