In the interest of full disclosure, you should know that I didn't even like (what's considered a modern classic in the Korean monster movie canon) The Host.
Still reading? OK, here's the basic plot: on an oil-rig platform moored off the coast, the Sector 7 drilling operation seems to be a failure until the crew suddenly stops hitting rock bottom and finds black gold. This is thanks to team leader and biker babe Cha (Ji-won Ha), affectionately dubbed "Hard-Ass" by her underlings; but kudos quickly turn to blame after the holes unearth mystery sea cucumber -like creatures who are kind of cute at first, but then turn deadly.
There are some acceptable action scenes involving gigantic drills and kicking extraterrestrial jellyfish butt, and there is a bit of suspense and horror in the beginning when (this isn't a spoiler) the crew starts getting picked off one-by-one and they all assume the assassin is human. The creatures are full-on CGI and when combined with slapdash bandwagon 3D, the movie seems that much more on the hokey side. Still, it's better-looking than your garden variety SyFy Original.
Another minnow-sized point in its favor is, Sector 7 sticks around just long enough to begin to wear out its welcome — unlike many Korean horror films, it's in and out pretty quick, running just about 90 minutes long.
Still, unless you are a diehard, and preferably desperate, fan of Asian monster movies it's probably best you sidestep Sector 7.
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Reviewed by Staci Layne Wilson