In 2038, Nguyen An sits before the ECHO machine in the abandoned Morrow building and sends her own neural state back to the first of June, 2025. For thirteen years, the verdict that she killed Khai has gnawed her life away, and she returns to stop that death from ever happening. Waking beside Khai, still breathing, she has seventeen days before the day he dies. But messages from an unknown number keep reminding her that last time she told him everything, and Khai died four days early. The more she pieces her memories together, the more she finds herself joining them with guesswork. The room where she remembers him dying was only built after the seventeenth. If memory can be planted, then who wrote those thirteen years.