In the world of ABO, pheromones represent different classes. One is obviously a top Alpha but doesn't like being carried forward by pheromones, and the other is an Omega with underdeveloped glands pretending to be an Alpha. The two have different views, but they live together but unexpectedly get along well.
The paranoid gangster Gong and the kind-hearted and warm-hearted couple work side by side to trace the truth behind the death of their loved ones and lift the veil of crime.
Gong is a rotten-hearted apple that only treats well. The greed and vanity of adults are like the endless night, but the light of dawn will eventually come.
Mission: Pursue equal human rights and warm family ties in the ABO world.