OnKate's21stbirthdaycampingtrip,herfriendsencounterPiglet,amonstroushuman-pighybridwhobrutallymurdersoneofthem.TheyuncoverPiglet'soriginsandKatemustconfrontherpasttosurvivetherelentlesskiller.

In2004,two12yearoldgirlsembarkonacampingtripintheremotewoodswithbigbrotherDylan.LittledotheyknowthattheirpeacefulgetawaywillturnintoanightmarewhentheyencounterthenotoriousPigman,aterrifyingfigurelurkingintheforest.Astheyfindthemselvesbeingchasedandhuntedthroughthedenseforest,thegirlsmustrelyontheirwitsandcourage...