At the end of all realms lies the Netherworld. In the beginning, ghosts roamed unchecked and the human world suffered terribly. The Heavenly Emperor flew into a rage and sent the Divine Lord Ye Lan to govern the Netherworld. After taking charge of Fengdu, Ye Lan established the Ten Halls of Yama and bestowed ten divine artifacts to seal away the ghosts, keeping the two realms at peace and ensuring the orderly cycle of reincarnation.
Unexpectedly, someone opened the sacred artifact "Nine Nether Record of Mysterious Splendor", which sealed away the ghosts in the Netherworld's Ninth Hall, while Wen Yuwan was suffering an outbreak of her Flower Gu. Ghosts poured into the human world, and the furious lords of the Nine Halls sent Wen Yuwan to retrieve them. As she went about her task, Wen Yuwan discovered that the person who had opened the "Nine Nether Record of Mysterious Splendor" and unleashed the ghosts was Yan Lingchuan, the man she was gradually coming to like and trust. A rift grew between them. Later, when the two kings of the West fought over the throne, Wen Yuwan was captured. Yan Lingchuan arrived in time and confessed his feelings, and the two made up and officially became a couple.
Together, they then set out to retrieve the ghosts from the "Nine Nether Record of Mysterious Splendor", facing a series of life-and-death crises and sharing plenty of joyful moments along the way.
In a nutshell: Princess Wen Yuwan of the Netherworld's Ninth Hall journeys to the human realm to retrieve the ghosts from the "Nine Nether Record of Mysterious Splendor", and ends up falling in love with Yan Lingchuan, a fallen angel from the West.