Le Retour de Lemmy Caution (1989)

The owner of Black Angel is shot by Mamba, a killer in the pay of the Chinese mafia. The victim's daughter, who witnessed the murder and knows she is threatened, refuses to collaborate with the police and prefers to call on an old friend of her father's, Lemmy Caution, but is this man, who lives on an island paradise, still old enough to play the vigilante?