On vacat*^ ion *. at a remot,=e l .;ake house, a mother and her* two #^ youn%+]g d/ aught+ers ,must fight for  `s-!]urviv$_-
al after !$.falling into a t@(errifying an;[#d bi % zar%`)!r*[e nightma%re conceiv-+  ed by a ps@ychop(ath.