Deep in the forest, a curious pair reside: a young girl Mira, whose affliction leads her to call forth darkness whenever she’s in distress; and her physician Rei, determined to seek a cure. Each day, she works to remember the light and bring back the person she used to be. But a sudden visit from Rei’s friend, who harbors an interest in Mira’s illness may be end of their peaceful days…

Unable to speak to strangers due to her affliction, Mira lives a mostly solitary existence-until a visitor appears on her and the good doctor's doorstep. With a cute, fluffy goat-like look that calms Mira's anxiety, and enchanting stories of a mysterious object, the visitor quickly captivates Mira's attention, for better or worse...