The spiritual veins of the Eastern Wilderness Continent have snapped, cultivation is in decline, and nine great clans control the spirit mines. Xie Zhaoning, the Xie family's legitimate daughter, was born with the gift of communicating with spirits. Sharp-tongued and fearless, she cares nothing for social conventions. The Yin Fiend Army has rebelled, the Law Sect manipulates the courts, and the world is in turmoil. A robbery at a spirit mine forces her to travel with the scoundrel Taoist Qi Xiaojiu. Flippant and shameless, Qi Xiaojiu repeatedly protects her in moments of danger, though he is actually a Soul Guardian who has lost his memories. Together, they investigate cases, foil conspiracies, battle evil spirits, and expose dark secrets. She sees through the truth with her spirit-communing powers, while he awakens his protective strength and turns the tide. From upheavals over spirit mines to the flames of war on the northern frontier, from the Law Sect's intrigues to rivalries at the academy, they fight monsters, grow stronger, and gradually fall for each other. In the end, they redefine the immortal path and write a legend.