The famous "Wuying Yizhi", at the invitation of his trusted lover Wanxia, embarked on a carefully planned murderous situation. During the bloody battle, his arm was cut off by his beloved, and he learned that the ten years of tender companionship were actually her long disguise to avenge the destruction of her family. Fifteen years ago, the massacre at the master's door led to this wrong encounter.
Faced with Wanxia's deep-seated hatred and the Tingyulou killer's relentless pursuit, Yizhi reveals the secret of his master's sect and the real culprit behind the tragedy. A betrayal reveals a deeper conspiracy. From a life-and-death fight to being forced to walk together, on the road to death, the truth is peeled off layer by layer like a fog.
Former enemies have become each other's only support. Love and hate are tempered in the light of swords, and the truth floats in the blood. When the undercurrent of the world surges again, they must join hands to face the mastermind behind the scenes and the ghosts of the past. This is a road of revenge leading to the truth, and also a redemption that spans ten years of deception and sincerity. The setting sun is like blood, reflecting not only the cruelty of the world, but also the glimmer of nirvana and rebirth after the intertwining of love and hate.