This is the story of giant electric eels, and maybe they're from another planet. I don't know. Everything is pretty vague. They're trying to melt the polar ice cap, apparently so more of them can come to take over the world. There's this female scientist who seems to think this is a marvelous idea, and basically she does everything she can to help them. She's the "hero" of the story. Yeah, pretty good stuff, huh? She also grins at everything. As another reviewer said, she gets fired, she grins. She thinks she's going to die, she grins. She concocts a plan so that the creatures can come back and wipe out mankind later - after she's had a chance to live her life. She grins. Did I mention she's our hero?
David Keith is in it too, playing the same exact character he plays in everything else he's been in lately.
Special effects aren't too bad in spots, but the eels are really silly looking. Looks like they ran out of money near the end and used unpaid interns to finish up the CGI. Acting is awful - the female lead really steals the show in that category but she had plenty of competition.
So in conclusion, if you're just dying to see a whole pile of cheap CGI and really couldn't care less if the story makes any sense or the acting is any good, hey, this is the film for you!