故事发生于封神大战后。姜子牙率领众神伐纣，赢得封神大战胜利，以为可以唤回世间安宁。然而，一切并未结束。一个偶然，姜子牙发现了原来“封神大战”之下酝酿着更大的阴谋。姜子牙开始踏上探寻真相的旅途......
Based on the smash video game series by Double Fine Productions (Psychonauts, Broken Age) and the world originally created by Tasha Sounart, Costume Quest is a funny and mysterious animated series aimed at six to 11-year-olds. The show stars four kids facing off against the dark forces lurking in the shadows of their sleepy town of Auburn Pines. To overcome obstacles and achieve their goals, they must learn to unlock and master the magical powers of super-normal costumes-with each costume comes a new set of transformations and powers.
狐妖蛊惑书生的风波平息后，神都恢复了以往的繁华与喧闹，武后心情大好，决定举办一场盛大的秋猎，邀请王公贵族和民间擅长武艺的能人共聚一堂，切磋骑射。 吐谷浑小可汗慕容纪也受邀参加秋猎，却阴差阳错的成了一场行刺武后阴谋的“嫌疑人”。走投无路的慕容纪只得向裴坤求助，希望他能帮忙找出真凶，洗清自己的冤屈。为保大唐国泰民安，也为帮助好友，裴坤和尉迟柱、韩冬青等伙伴再次联手查案，一路险情和笑料不断，终于追查到了谋刺武后的真凶，阻止了一场大唐与吐谷浑之间的战争。
