As the other reviewers on this site have noted, BIG RASCAL really isn't up to much. It's your garden-variety kung fu film, a chop socky epic made by Hong Kong producers but shot in the cheap in Taiwan. It features poor plotting, very average fight staging in which you can see the supposed hits miss more often than not, and the lack of any big name or talented stars.
The story is about a couple of upstanding guys who have financial issues (money seems to propel the story lines of every period kung fu flick in existence). One of them finds work as a bodyguard, but his new job sees him coming up against various criminals with plenty of fights ensuing. A female fighter is also involved in the story. As is usual for this genre of film, BIG RASCAL suffers from poor dubbing and the singular availability of a lousy pan-and-scan print that robs the action of much of its excitement.