一个炎炎的夏日，厌倦都市喧嚣生活的年过中旬的老处女瑞秋，和侄子、侄女一道来到风景怡人的边远小镇别墅"阳光居室"度假，计划度过一段逍遥自在的神仙时光。在她进驻"阳光居室"的第二个夜晚，她突然看到走廊落地窗后面一个人影向屋里张望，等她走近时黑影却倏忽消失了。从此平静的小镇再也不安宁，夜幕降临，空荡荡的大厅里响起奇怪的声音，屋外的小狗发出凄惨的嚎叫，尖厉的枪声划破夜空，死神的阴影从她踏进别墅的那一刻起就未曾褪去。(In a hot summer, an old maid Rachel who was in the middle of her age and was tired of the noisy city life came to a remote town villa "sunshine house" with pleasant scenery for vacation with his nephew and niece, planning to spend a leisurely and carefree fairy time. On the second night she entering the "sunshine house", she suddenly saw a shadow behind the French windows in the corridor peeping into the house and the shadow suddenly disappeared as she approached. From that point, the quiet town was no longer in peace; as night fell, the strange sound rose from the empty hall; the dog barked in a dismal howl outside; shrill sound of gun pierced the night sky. The shadow of death had never faded from the moment she stepped into the villa.)