Under the neon city, there is an unknown ancient martial arts world. The warriors here have not only martial arts inheritance flowing in their blood, but also the ABO pheromones engraved into their genes - Alpha's martial bones are fiery and can activate the most powerful and powerful moves; Beta's treacherous movements make him a natural expert at tracking secretly; Omega's fragrance can trigger the secret realm of martial arts, but it has also become a weakness coveted by all forces. Jiang Xun is a Sanren wandering on the edge of martial arts. He possesses ancient martial arts techniques of unknown origin. His pheromones are in a critical state of chaos all year round. He is neither pure Alpha nor Beta. A series of martial arts murder cases suddenly crashed into his life: the deceased were all top Alpha warriors, and they died in strange ways. All the foundations of martial arts in his body were removed, and only a trace of strange Omega pheromones remained. The police were helpless and the Wumen family kept secret, but Jiang Xun was pushed to the forefront because he accidentally appeared at the scene of the first crime. He was forced to track down the truth, but found that behind the murder was a hunt for the "scent of martial bones" - someone was trying to use forbidden techniques to forcibly combine pheromones with martial arts to create an impeccable "perfect warrior." During the pursuit, Jiang Xun's pheromones suddenly went out of control, and the dusty memory fragments surged. He was shocked to realize that his life experience had long been closely entwined with this conspiracy that spanned twenty years. The light of the sword in the dark alley, the calculations of the aristocratic family, and the murderous intent intertwined with pheromones. He clenched the broken blade in his hand and moved forward step by step in the fog, trying to tear apart the layers of masks in this urban martial arts journey.