A filmmaker discovers a box of video tapes depicting two students' disturbing film project featuring a local horror legend, The Peeping Tom. As he sets out to prove this story is real and release it as a work of his own, he loses himself and the film crew following him into his project.
故事发生在近未来，因为未知神秘生物的出现，导致整个城市面临前所未有的危机。一桩被隐藏多年的秘密计划浮出水面。少年马山（王俊凯 饰）被带入749局，进入层层迷宫，开启一程冒险之旅，并在这一旅程中完成了一次自我的成长与救赎。
