During the holiday, a group of teenagers go in a long journey to the woods to stay in a cabin, where they face the horrible threats of aliens that begin to chase them.
"Extraterrestrial" takes the well-worn concepts of space-creature marauders and doomed party-hearty cabin weekenders and opts to fling the litany of horror and sci-fi clichés at you in the manner of monkeys well armed with dung.
It's in the final act that the pic becomes more ambitious and interesting, though not quite enough to lift the whole from decent-time-filler status to something more inspired.