In the final years of the Daiqing Kingdom, the Central Plains were in turmoil, and storm clouds gathered over the royal city of the Hanmo in the northern frontier. Lin Yang, an agent of the Orbital Bureau born with an incomplete soul, wielded a soul-cleaving blade that could sever only causes and effects gone off course. Together with his partner Shen Ning, he was ordered to the grasslands to stop Bokke Zunzhong from straying off course.
Xiao Yue of the mysterious organization “You” was bound to Lin Yang by the threads of fate. They were at once enemies and allies. From the blood curse at Qinghai Lake and the blood-spirit banner that wreaked havoc in Pingtou Town, their path led into the power struggles of the Hanmo royal city. Minister Duoge guarded the borders and kept the peace, ambitious princes sought independence, and Master Danzeng, an envoy of the Snow Ridge Sacred Sect, schemed from the shadows. The various factions maneuvered around the Golden Man of Yin-Yang Sacrifice to Heaven.
Caught between the precepts of his tradition and his deep love for Madam Duolan, Bokke Zunzhong desperately sought an impossible way to have both. As layer upon layer of conspiracy was exposed, a long-unsolved case from thirty-eight years earlier resurfaced. Back then, Lin Yang's master, Zhou You, had made a mistake while performing a ritual, displacing their souls and entwining the soul-breaths of Lin Yang, Xiao Yue, and Zunzhong in an inescapable soul pact. This was the very source of Lin Yang's incomplete soul.
The situation exploded at the altar during the Danshuke Festival. Zunzhong resolved to reclaim his lost soul fragments and use the power of the earth's ley lines to activate an evil artifact and launch an attack. With their soul veins connected, even the thunderbolts and deadly weapons could not be used without risking harm to the wrong target. To break the shackles of fate, Xiao Yue performed the forbidden Soul Sacrifice. At the critical moment, a mysterious woman intervened and carried her away. Her whereabouts were unknown.
Lin Yang swung his blade and severed Zunzhong's soul vein, but could not stop the ley lines from running wild. The altar collapsed with a roar. Zhou You fought his way out with Lin Yang, whose mind and spirit had been gravely wounded.
When the smoke cleared, storms still raged across the grasslands. Zunzhong's fate was unknown, Xiao Yue's whereabouts remained a mystery, and the true schemes of “You” still loomed over everyone. The tangled causes and consequences buried for years were far from resolved.