12岁女孩子奥菲丽娅（伊万娜•巴克尔洛 饰）有一个凶暴的法西斯军官继父维达（塞吉•洛佩兹 饰），维达的任务就是镇压反抗者，研究各种刑具来折磨残害被抓来的异见人士，奥菲丽娅每天都目睹让人不愉快的事件。眼看着冷酷的继父和其党羽每日作恶还以此为乐，母亲又身怀六甲患病在床，被孤独感和目睹暴行的痛苦困扰的奥菲丽娅开始沉浸在自己的幻想中聊以自慰。 　　一天，奥菲丽娅遇到了迷宫的守护者，潘神（道格•琼斯 饰）。潘神告诉她，她其实是奇幻王国失踪的公主，要想恢复身份，必须通过三个危险的考验。In 1944 falangist Spain, a girl, fascinated with fairy-tales, is sent along with her pregnant mother to live with her new stepfather, a ruthless captain of the Spanish army. During the night, she meets a fairy who takes her to an old faun in the center of the labyrinth. He tells her she's a princess, but must prove her royalty by surviving three gruesome tasks. If she fails, she will never prove herself to be the the true princess and will never see her real father, the king, again.