To be honest, I have no idea what to make of this...movie. I originally thought it was a kids' "horror," like Goosebumps or Hocus Pocus. It's clear in a big way during the first two minutes that it's not.
It straddles that line between kids and adults, though: kids in the acting and special effects, adult in the gore and swearing. Also, I think they ripped the music from E. T.
Ssssooo, what the frig did I just watch? I *still* have no idea.
Don't bother with it if you have anything else on your watch list. But if you don't, check it out. It's a weird movie: a weirdness crossed between you watching someone do something stupid and you're embarrassed for them and you watching someone do something unexpected and you're calling 911 on them.
So check it out if you like practical effects from the 80s and acting from Sleepaway Camp. If not, Event Horizon is due for another viewing.