This film had some great, long, and creative fight scenes in this old-school kung fu style. This genre of film was made almost exclusively just to show off the marital arts action Not for the plot.
The enormously out-of-sync voice-overs is just part of the fun. And helps to keep things kinda light-hearted in what is otherwise just alot of stylized violence.
It does have a storyline that is more complicated than most of these types of films usually have.
But, just watch it for the neat fight scenes. And don't go into it expecting much else.