Onaweekendgetawayatarundowncabininthewoods,Jason,acautiousteen,hiscrudebestfriendColinandhisfearlessoldersisterSummerareforcedtoworktogether,growupandsavetheirhardpartyingparentsfromtheirpredatoryneighbour(LaurenHolly)whoisi余罪资源ntentonfeedingthemalltoherundeadfamily…