Insects and humans avoid fighting by not trespassing on each other's territory. In return, the insects shared with humans, resources from their deep forest.

However, several years ago, humans took the "power" from the insect king and sealed him in the depths of the forest. The humans used the power to increase their own strength, no longer afraid of the deep forest, they began to disturb it.

One day, adventurers exploring the depths of the forest were brutally murdered――Thus, marked the beginning of this story.