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.
曾经的一场人魔大战令两方人马都元气大伤，如今，战争的硝烟已然散去，却遗留下了诸多的难题要一一破解。人类为了赢得战争而锻造了大批拥有强大力量的武器，人们称之为“神诲魔械”，战争结束后，这批破坏力强大的武器的去向则成为了需要解决的首要问题，大家都同意将它们交由护印师来保管。 丹衡（平川大辅 配音）和丹翡（中原麻衣 配音）兄妹两，身为护印师，担负起了保管最强兵器“天刑剑”的职责，却也给两人引来了杀身之祸。最终，天刑剑还是落入了蔑天骸（关智一 配音）的手中。为了追回魔剑，丹翡踏上了旅途，期间结识了凛雪鸦（鸟海浩辅 配音）和殇不患（诹访部顺一 配音）两人。
为了光鲜亮丽的人生而整容，韩予曦能否迎来她的幸福生活？
