Game of Death II (1981)

In this gripping story of vengeance, Bruce Lee assumes the role of Billy Lo, who is plunged into turmoil following the sudden death of his close friend Chin Ku. Suspicions mount as a gang's audacious attempt to snatch Ku's coffin with a helicopter at the funeral fuels doubts surrounding the true cause of his demise. Upon learning of the bizarre incident, Lo's younger brother decides to forsake his spiritual mentor and delve into the enigma. His quest leads him to the ominous Castle of Death, the very place Ku was last sighted alive. Here, he forges an unexpected alliance with a ruthless and formidable martial arts master who presides over the fortress. Yet, when the master meets an untimely demise shrouded in secrecy, Lo finds himself entangled in a perilous showdown with an even more formidable adversary.