Eighteen years after the fall of the Min State, the last imperial prince Lin Mo hid in Wuxiang Temple, studying Wuxiang Sword Technique under Master Kuchan. Eighteen years of green lamps and ancient Buddha, evening drums and morning bells could not grind away the obsession in his chest. Deep in the palace, his biological mother Su Wan was imprisoned and tortured by the Emperor of Southern Tang, longing every day for her son's return. Undercurrents surged in the martial arts world, and disasters frequently occurred in the Southern Tang territory. The old subordinate Xiao Bieli lurked in secret to contact the remaining ministers, waiting only for the young master to come out of the mountains. When the time was ripe, Lin Mo said goodbye to his master and stepped into Jinling in a suit of black clothes. He disguised his identity to mingle in the market, broke into the deep palace during the birthday banquet to search for his mother, made a name for himself in the arena with peerless sword techniques, and gathered martial arts righteous men and scattered old subordinates.