Some things are never explained and not every character motivation has to be explained I reckon (whether it's a villain or our main hero doing stuff). The "story" itself is pretty straightforward though and it doesn't take a lot of guessing to know where this is heading and what will happen in the course of it.
Michael Biehn somehow got involved in it and he does a decent job being guardian. Even when he doesn't seem consistent in what he's saying and what he's doing, he still pulls it off. But more important for anyone watching is, if the action is good. I would say it's OK/decent enough. It's not over the top or anything great, but it serves its purpose and will entertain enough if you're willing to oversee the flaws ...
Michael Biehn somehow got involved in it and he does a decent job being guardian. Even when he doesn't seem consistent in what he's saying and what he's doing, he still pulls it off. But more important for anyone watching is, if the action is good. I would say it's OK/decent enough. It's not over the top or anything great, but it serves its purpose and will entertain enough if you're willing to oversee the flaws ...