In a world where everyone owns an android that can play any role—family member, friend, or lover—22-year-old Touka Ichinose struggles to show her emotions and keeps getting dumped by the people she dates. After being told that "androids show more emotion than you do," Touka impulsively signs up for a one-month trial plan for an android. The android that arrives is exactly her ideal type, and he is astonishingly skilled in bed. But he turns out to be a dangerous android who should never have been left unchecked.