A generation of guru Li Zhenqiang (Bruce Lee) and martial arts master Qin Gu (Huang Zhengli) are friends of life and death. Qin Gu's inexplicable death makes Li Zhenqiang determined to find the real killer behind it. How could I know that in the process, Li Zhenqiang was unfortunately killed, leaving only a secret related to the death tower, which no one could unravel. Zhenguo (Jin Taizhong) is Li Zhengqiang's younger brother. Knowing the news of his brother's death, Zhenguo, who has been practicing in isolation for many years, decided to go down the mountain to seek revenge for his brother. Following the clues left by Li Zhengqiang, Zhenguo came to the mysterious villa, experienced many life-and-death dangers, and finally opened a secret passage to the palace hidden under the villa. Here, it was Qin Gu who was waiting for him. Zhengqiang and Zhenguo fell into the whirlpool of conspiracy planned by him. Qin Gu wanted to kill and destroy the body of Zhenguo, but it was fought back by the latter.