Gemma Fisher seems to have it all─she's carefree, pretty, and falling in love with Alex, the boy next door. He's always been just a friend, but this summer they've taken their relationship to the next level, and now she's falling harder for him every day. But Gemma doesn't know that her ordinary life is about to change forever. Penn, Lexi and Thea are strangers in town for the summer─and they've been watching her. Three sisters with mysterious powers, they invite Gemma to join their exclusive circle, and it changes her in ways she never imagined. Suddenly she's stronger, faster, and more beautiful than ever. But her new powers come with a terrifying price. And as she uncovers the truth, she's is forced to choose between staying with those she loves─or entering a new world brimming with dark hungers and unimaginable secrets.


潔瑪的人生似乎完美無缺──她無憂無慮、長相漂亮，還有一位青梅竹馬的戀人亞歷克斯。過去她一直將亞歷克斯視為朋友，但今年夏天他們的關係邁入新的階段，她的愛意也與日俱增，然而潔瑪並不曉得她平凡的生活即將永遠改變。珮恩、麗克西和緹雅這三姊妹擁有神秘力量，這個夏天來到鎮上後，一直在觀察潔瑪。在潔瑪受邀加入三姊妹的圈子之後，她身上發生了從未想像過的變化。她忽然變得更強壯、更敏捷，且比以前更加美麗；但這嶄新的力量卻要付出可怕的代價。隨著她逐漸瞭解事情真相，潔瑪將被迫選擇，是要留在自己所愛的人身邊，還是踏入另一個世界，面對其中的黑暗飢渴和無法想像的祕密。