After spiritual qi revival and the great catastrophe, cities became hunting grounds for monsters.
Yun Qiantong, a poor boy from the slums, awakens his innate divine ability, the [Primordial True Insight Eye], in a desperate situation. Classified as a Grade A Pioneer, he can travel between the apocalyptic Blue Star and the Yuan Yang Realm to cultivate.
On Blue Star, he joins the sharpest blade of the East Sea Fortress, the Thirteenth Spirit Guard Squad. Following the silver-haired, ice-eyed Chu Xueyao, a cool and ruthless captain who saves him time and again, he fights desperately to carve a path through the beast tide.
In the Yuan Yang Realm, he accidentally opens an ice coffin, and the mighty sword cultivator Mo Wanyan of the Heavenly Ruins Realm forcibly opens his nine meridians, binds their souls together, and ties their lives to one another.
At the fortress, he also meets Lu Lingyue, a frail girl born with nine meridians but afflicted by “withered meridian syndrome.” He offers her a cherry blossom candy, and with it, his first kindness.
On one side stand the steel Great Wall and the beast tide; on the other, sword-tomb immortal mountains and seals.
He trains with his blade, slays monsters, and racks up battle merits, thinking he’ll do nothing but grow stronger between the two worlds.
Until one day, Yun Qiantong realizes
The cool and aloof captain trusts him more than anyone, giving him the most dangerous positions;
The frail girl is willing to wager what little lifespan and resources she has on giving him a future;
And his tsundere master complains about him with her mouth, yet dumps every secret sword manual she has into his hands.
Things seem to be heading in a rather strange direction…
