In a dystopian Japan, scientists have developed a new pill hailed as the ultimate forget-me-not. Although the miracle drug transforms society by warding off memory loss, it inexplicably has no effect on the narrator’s mother, a patient with early-onset Alzheimer’s. Deemed a threat to national security, the mother is taken into custody and sequestered away, compelling her daughter to embark on a searching journey back through the fog of memory.
