这是一部很特殊的战争题材电影，它真实地描写了德占区人民的悲惨遭遇和场面，以及人们面对突如其来的灾难的恐惧，反映了战争的真实面目。它既不同于《斯大林格勒保卫战》、《攻占柏林》这些正面战场的血肉横飞、排山倒海、摧枯拉朽，也不同与《这里的黎明静悄悄》、《星》所描写的局部战斗中体现的平凡悲壮，更不是战地浪漫曲，而是降临在平民百姓头上血淋淋的残酷。影片的事件和恐怖场面远超过任何一部描写德军集中营的电影，令人毛骨悚然，提醒胆小和心软者慎看。

Several young couples travel to a private island for a mysterious training retreat that promises to strengthen their relationship. However, during the Retreat, the heroes encounter an ancient demon - a Succubus. This monster feeds on the life energy of people, taking on someone else's appearance and provoking victims to show the worst qualities and do terrible things.