The Yin-Yang Master: Dream of Eternity

Centuries ago, a malevolent serpent demon was trapped within the Imperial City. Four masters sealed it inside the empress and bound it with four stone guardians. The seal was meant to hold the creature forever, awaiting the day it might threaten the realm again.

In the present day, Hongruo, Longye, Boya, and Qingming travel to the Imperial City to awaken the four stone guardians when the serpent stirs. They prepare the city’s defenses and reaffirm their pact to keep the demon sealed. The urgency is clear as the old threat returns to life.

Hongruo is killed in his sleep by a Hair Demon, forcing the court to confront the looming danger. The empress orders Princess Changping to investigate his death and appoints He Shouyue as Hongruo’s replacement. Suspicion spreads as new protectors join the ranks of the guarding masters.

Qingming confronts the newly appointed He Shouyue and learns that he is the Spirit Guardian of Zhongxing, sent to protect the empress. However, Zhongxing’s death leaves Shouyue slowly dying from the strain of the bond. The revelation deepens the already tense relationships among the masters.

A failed assassination attempt on the empress triggers a wave of distrust among the four masters. Each begins to doubt the others as they conduct independent investigations into the murder and the serpent’s rising threat. The city tightens its grip as fear and paranoia spread.

Longye is slain by the Hair Demon, and with her last breath she tries to convey a critical discovery. Qingming, however, misreads the message as an accusation against the princess, widening the rift between the guardians. The truth remains elusive as time runs out.

Realizing their theories diverge, Qingming and Boya decide to pursue the mystery on separate tracks. They plan to confront the princess and Shouyue individually to uncover the truth behind the deaths and the serpent’s return. The Imperial City becomes a chessboard for hidden motives.

Qingming tracks the Hair Demon after an attack on the empress. The demon admits it has waited sixty years to avenge its own death upon the princess. Qingming realizes the princess has not aged in decades, hinting she is the true empress and the vessel of the serpent.

Confrontations peel away the lies: the princess is, in fact, the centuries-old empress and the living vessel of the serpent. Her agelessness signals a history that stretches beyond memory. The others’ suspicions sharpen into a dangerous certainty.

The princess and Shouyue reveal a grim plan: to save Shouyue from dying, he must become the serpent’s new vessel and grow immortal. To make this work, the serpent must be allowed to rise fully. The plan hinges on the true identity of Fangyue being kept hidden until awakening.

The princess and Shouyue flee atop the now-giant serpent while Boya and Qingming give chase. The pursuit weaves through the city’s streets and skies as the battle lines harden. The fate of the Imperial City hangs on their continued pursuit.

The princess gives birth to the serpent’s awakening and Shouyue moves to become its host. The pair are swallowed by the serpent as the guardians awaken for the final confrontation. Inside the beast, the future of many lives is decided.

Shouyue emerges as the serpent’s vessel and clashes with Boya, Qingming, and the Spirit Guardians—Snow Hound, Killing Stone, and Mad Painter. The Crimson Bird awakens in Boya’s form, turning the battlefield into a spiritual duel. The fate of the city hinges on this clash.

Qingming teleports inside the serpent and witnesses the last memory with Zhongxing, learning a final lesson about love and duty. The princess sacrifices herself, ending her centuries-long role as the vessel. Distracted, Shouyue is impaled by the Crimson Bird, and the serpent begins to crumble.

The Crimson Bird sacrifices himself to save Qingming, and Shouyue is finally killed as the serpent collapses. Boya awakens and the two friends bid farewell, while the entombed Longye is revealed to still be alive. The Imperial City begins to recover from the ordeal and the cost of their choices.