At the dawn of the 20th century, a young Zhang Qishan and his father are subjected to cruel experiments by the traitorous warlord Zuo Qianzhi. Ten years later, fueled by a desire for revenge and the need to protect his family secrets, Zhang Qishan arrives in Changsha for the first time. There, he encounters Er Yuehong, a young opera master with extraordinary skills. Despite their initial friction, the two form an unlikely alliance to dismantle Zuo Qianzhi’s tyrannical rule and uncover the truth behind a mysterious “monster” that Zuo is using to threaten the city.