In this story, Mary is our adorable protagonist and was living in a town near a rumored forest that is named to be dangerous. Knowing that the story about the prince who went missing 10 years ago, went in to this forest and never came back. As Mary knew the story, she's certainly aware of it. Then suddenly she followed this strange glowing butterfly that lead her to that forest and met a young man. Utterly confused and surprised as she encounter him with her way to escape the forest.