A family of four staying at a secluded mobile home park for the night are stalked and then hunted by three masked psychopaths.
 
The original is still the better film out of the two, but the sequel is pretty creepy and not a bad follow up to its predecessor.  To be honest, the only difference between the two movies is one is set "inside" and the other is set "outside".
 
FUN FACT:  Before the script was re-written, Kristen McKay (Liv Tyler) from the first film was going to return only for the opening scene, where she would be killed.