The second of the Bruce Lee-starring movies is in terms of plot a lot less interesting than the first. Here, we have the 'student sets out to avenge his master's death' which was already the major storyline of most martial arts films. However, it is handled in a more realistic way then usual and technically it is far superior. Lee was allowed to choreograph his own fights and his battle with Japanese martial artists in their school and climactic duels with a Russian boxer and a Japanese swordsman remains classic fight scenes.
The film drags somewhat in the middle although the lengthy dialogue scene between Lee and his girlfriend was another step forward for the Hong Kong martial arts movie, vivid proof that Lee was a pretty good ACTOR. By contrast, Lee's final farewell to his girlfriend is all the more powerful for being done completely without dialogue at all. The ending is the most powerful and moving of all the Lee films, the final freeze frame managing to encapsulate Lee's grace and power in a single shot.
Many mock Lee's films as being silly and just consisting of fighting. Both accusations are completely untrue. They have far less fights than most films of this kind and, at least in the three Hong Kong films he made, there is a clear message that violence does not solve anything. They may not have the polish of the more recent works of Jackie Chan and Jet Lee but their power remains undiminished, as long as of course one does not watch the awful dubbed versions!