The movie follows a group of scientists who have been contracted to work on an invisibility formula. The team, lead by Sebastian Caine (Kevin Bacon), has successfully learned how to turn their animal subjects translucent; now their only problem is bringing them back.
The movie picks up with Caine making the breakthrough that will bring their test subjects back into the opaque. Of course, the twisted genius then decides their experiments need to go to the next level, human testing. Caine convinces the team to use him as their first human subject. The chemical works and he successfully, albeit painfully, turns invisible. But something goes wrong when the team tries to bring Caine back. The chemical doesn't work and Caine begins to go... wrong. Let's just say when Caine realizes "It's amazing what you can do when you don't have to look at yourself in the mirror anymore," he gets out of control.
The rest of the movie involves the group of scientists being trapped in the underground laboratory trying to stay alive as the deranged invisible man believes they are going to turn him in.
Like I said, I didn't really enjoy the movie the first time I saw it years ago, but rewatching it, if nothing else, means that I have yet another Kevin Bacon movie to add to my collection. Fans of the movie will enjoy the dozen-plus featurettes found in the Director's Cut edition, making this the version to own if you really want it.
I do have to note though, fans of the Heroes TV series will enjoy seeing this early part for Greg Grunberg (who plays Matt Parkman, the psychic cop) as Carter Abbey, one of the scientists.