In Ionia, there is a thin and mysterious dream path between the material world where the living walk and the spiritual realm where the soul lives. Maeve Dreamwalker, a girl who is not a vastaya but is gifted, is born to be able to walk in these border areas, witness scenes in the spiritual realm that are invisible to ordinary people, and communicate with weak spirits. She is a guide to the lost, a silent messenger between worlds. However, a twisted force began to erode the foundation of the Dream Path, twisting the peaceful passage into a breeding ground for nightmares. Terrible nightmare entities tear apart the boundaries and pour into the material world, bringing panic and destruction. Drawn into the center of this catastrophe, Maeve must delve into the heart of the turbulent Dream Trail and face the corrosive source of humanity's collective unconscious fears. Her journey is not only about finding the truth and repairing boundaries, but also a self-sacrificial choice: in order to save two worlds on the verge of collapse, she must cut off all ties with the material world and become an eternal bridge between the two worlds. At the last moment of decision, she saw the reflection of her childhood dream, and her innocent self was being swallowed by the same nightmare. How will she choose?