A faceless terror descends upon the quiet harbor of Chestnut Grove, transforming a simple slumber party into a desperate fight for survival. One year later, the nightmare resurfaces at a remote lake house as the lone survivor and her friends realize that while faces may change, a killer’s thirst for blood never truly dies. The girls must reconcile their fractured pasts quickly, or they’ll become the next permanent guests on the maniac's list.
A surge of missing people is sweeping the harbor area of Chestnut Grove. During the town's panic, three local girls get together and have a slumber party, believing they are safe from the lurking danger. Their night of fun quickly descends into madness as the terror makes itself known to them.
One year after her twin sister and friends were slaughtered at the hands of a hooded maniac, Sam gets invited to a party at a former friend's place. The evening begins with the girls rekindling their tarnished relationships but ends in the fight of their lives as her sister's killer makes a guest appearance at the lake house and he's not on the welcoming committee.