Day and night divide the human world into two. In the world ruled by the dark night, unknown creatures lurk secretly. People who know their horror call them dark spirits. When humans are deep in sleep, they invade people's dreams and draw power from their hearts. However, in the human world, there are also some special individuals who are able to detect these creatures, and they have the ability to span two different worlds. People who have some knowledge of another world call them espers.
In a world shrouded in darkness, how will these ability users coexist with dark spirits? And what is it that prompts the ability users with different personalities to finally gather together and start a desperate battle with the dark spirit? Who is the hunter and who is the prey? What kind of thrilling developments will unfold on this dark night hunting ground, and what kind of earth-shattering plan is behind it?
Concept: Various cases occur one after another in the human world, but the power of the dark night world gradually emerges. The ability users became night hunters and each made the choice they thought was right. The ability users with different stories finally gathered to face the ultimate opponent in the dark night world.