A village boy’s dream to join the elite Hell Hunters turns into a citywide crisis when he unknowingly aids an enemy operative. As a powerful villain sends forces to recover stolen data, a single act of kindness sets off a deadly chain of events that threatens the fate of Ember City.

讲述明初年间，修仙玄门“青城派”弟子冷霜凝下山入世，在寻找解开自身宿命疑团的经过中，偶遇微服出城的“建文帝”朱允炆。而随着皇帝的身世之谜逐渐揭露，燕王朱棣谋逆，“靖难之变”爆发以至天下大乱，两位主角生死与共，展开了一段段从庙堂到江湖惊心动魄可歌可泣的传奇历险。