The master of the generation, Li Zhenqiang (Bruce Lee), and the 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 murderer behind it. Who knows that in the process, Li Zhenqiang was unfortunately killed, leaving only a secret related to the death tower, which no one can solve. Zhenguo (Kim Tae-joong) is Li Zhenqiang's younger brother. After learning the news of his brother's death, Zhenguo, who has been practicing in seclusion for many years, decided to go down the mountain to seek revenge for his brother. Following the clues left by Li Zhenqiang, Zhenguo came to the mysterious villa, experienced many life-and-death dangers, and finally opened the secret passage and came to the palace hidden under the villa. Here, it turned out that Qin Gu was waiting for him. Zhenqiang and Zhenguo fell into the vortex of conspiracy he planned. Qin Gu wanted to kill Zhenguo and destroy his body, but was counterattacked by the latter.