Four hundred years ago, the ancestors of the Twelve Clans sealed the outsider demon Erebos beneath the ley lines of the Giant Mountains. They forged a pact and an alliance, vowing to guard the seal together. Four hundred years later, the seal is leaking from within. The Mountain Guard Alliance has retreated eighty-three li, and only six of its eleven outposts still have lights burning. The first clause of the alliance requires anyone of the Fifth Realm or higher from each clan to personally stand guard, but after four hundred years, the words remain on the pact while they have vanished from people's hearts. The Heaven-Eroding Society wants to resurrect the Demon King, the Land-Splitting Alliance wants to rule for itself, and the Unclaimed Fangs care only about the price. The three factions scheme and struggle openly, while the protagonist's group stays out of the fight and simply takes advantage of the chaos. They must guard eleven outposts across the frozen wasteland and snowline, rescue someone from beneath Shattered Bone Gorge, face a door in the Dragon Tomb that the dragon clan has not dared open for four hundred years, and uncover a mole hidden in the heart of the Chen Alliance. Twelve people, twelve divine artifacts, twelve prices to pay. Chen power has three stages, nine levels, and twenty-seven ranks. Practitioners have an old saying: each rank is an inch closer to heaven. In the end, everyone will stand in the same place, beneath the Giant Mountains, in the Heartstone Hall at the core of the ley lines. The Demon King lies buried there, along with a question: should the Demon-Slaying Grand Array be activated or not?
