The ruling class, which once fled to space in the name of "salvation", returned to the earth and established a new order to manage and exploit survivors. Ivo, a girl who lost one leg while on the run, steps into the cognitive interference area (CIF) that "if you enter, your brain will be broken" and is the only one who survives. There were the remains of the orbital habitat "IVO IX" that had been missing for a hundred years and Estivan, a young man who lived alone. He saves people while esting her away, and she is afraid, suspicious, and attracted to him. Relief and domination, obsession and rejection intertwined in a closed space. Threats to the outside world and signs of "selection" progressing inside. The two of them mirror each other and question the meaning of survival and the boundaries of humanity.