简介：School'sout,examsareover,andit'stimeforreallifetobegin.Butbefore12friendsfromtheInternationalHighSchoolinPraguedisappeartothefourcornersoftheearth,theyintendtothrowthebestpartyoftheirlives.TheideatostagethepartyinPrague'sbiggestswimmingpoolisillegalbutcool.AndwhenGregor,thelaid-backleaderofthegroupthinksanideaisgood,thenno-oneelsefromthegroupobjects.Butwhatbeginsasthenightofallnightsquicklyturnsintoalifeanddeathstruggle,asthefriendscometorealisethatdeathitselfisontheguestlist...Amysteriousmaskedkillersetsahuntinmotionthatrangesthroughthefacility'shallsandcorridors.Asthekidspanicitbeginstodawnonthemthatthekillermustbeoneofthem...…