Synopsis：After the events of "Black Market Boxing King: The Blind Fist", the cynical and goofy rich second-generation Luo Zhennan (Jia Nan) no longer dares to step into the underground boxing gambling scene. He obediently spends his days at the taekwondo gym, with his only interest being teasing the beautiful coach (Feng Fangfang). However, Jiang Shao (Jiang Zhenyu), who has been coveting the Luo Group, refuses to let things go. While continuing to participate in the new underground boxing tournament (a four-man free-for-all), he sets his evil sights on Luo Zhennan and Yuan Zhanlong (Hu Long). Forced back onto the underground boxing ring, Yuan Zhanlong now faces an unprecedented ultimate challenge.