Synopsis：Chen Zhen learnt advanced skills in Japan on the command of his master, but found that many Chinese students were missing. When tracking down the real culprit with the help of his friend Liang Shaowen, Chen Zhen fighted a battle of wits and courage with Shinji Ito, the backbone of the Black Dragon Association, Chairman Kazunari Yamada, etc. Finally, the conspiracy of the Black Dragon Association was broken down and the Japanese laboratory was destroyed.