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.
本片讲述水利专家申天一和同窗辛远航在古木村治理黄河水患问题时，遭遇了“逆水行尸”的诡异事件，并意外搭救了昔日伙伴余茵。几人同行合力探索黄河诡事背后的真相。申天一等人在重重谜团中层层分析、逐步揭开谜底，找到了科学治理水患之法，彻底让古木村恢复了和平。
庆渊九年，查家之女查晓菘在被人追杀的过程中，中箭跌下悬崖，落入湖中。醒来后，一时失忆。而救下她的，是五个武艺高强、行侠仗义的“巡梦行者”。他们游走于天地间、维护天地平衡秩序、处理世界各个纬度空间的棘手事件，并始终秉持着忠正仁义、克己复礼的宗旨。他们发现查晓菘的时候，她已经是濒死状态，可因其体内意外吸入了御往之血(由天地灵气淬炼而成)，奇迹般从死亡边缘活了回来……
