At the crucial moment when the legendary Battle Emperor Xiao Yan of the Dou Qi Continent was about to ascend to the upper realm, he was caught in a temporal rift and unexpectedly arrived in Teyvat. In this unfamiliar and mysterious world, he discovered that all his former Dou Qi cultivation had vanished, but the Battle Emperor’s experience and will to fight remained deep within his soul. Determined to reclaim his lost power and, more importantly, find a way home, Xiao Yan resolutely joined the Fatui and became one of its Harbingers. Under the Fatui’s protection, he encountered Teyvat’s unique elemental power and began cultivating anew, gradually uncovering the secrets of this world. Facing challenges from the Seven Nations, the Abyss Order, and various mysterious factions, Xiao Yan repeatedly overcame danger with his unbreakable will and extraordinary talent for combat, gradually making a name for himself in Teyvat. Thus began a legendary journey of power, destiny, and the road home.