Armonia, an abandoned child, was considered bad luck due to her ability to talk to monsters. Despite growing up alongside monsters and having limited knowledge of the human world, she ventures into the human realm to protect the Walter Forest, her cherished homeland. There, she encounters Hyde, the commander of the Subjugation Troope, whom she must persuade to stop the Subjugation.

"Do you not wish to kill monsters?"
"Why is there so much troll snot?"

Their first meeting goes awry from the start. As the story unfolds, a chaotic fantasy romance develops between the female protagonist, who considers monsters as her family, and the male protagonist, who suffers from monster phobia.