When her grandmother, Theodosia, dies, Sofia’s parents replace her with a robot clone of the grandmother. Sofia resents the robot for not being her grandmother: everything’s just slightly off, and the presence of the robot keeps her parents locked in their grief. She also dislikes how, despite living with the robot, her grandfather starts to flirt with other women. One day, the robot is reading to Sofia when she notices that Sofia is sick. Sofia’s parents bring her to get a special surgery that installs nanobots in Sofia’s body. Now, Sofia can heal from nearly any injury within ten seconds and could never die. Her operation makes her bored with life. She tests the limits of what the nanobots can do by slicing her arms open and watching the nanobots repair them. Everyone gets tired of the robot grandmother over the years, which results in Sofia having to spend more time with her. Sofia shows the robot what she can do, and the robot is mildly horrified. They go to a museum opening for an exhibit her father helped curate. There’s an exhibition on the future of robotic medicine. The robot grandmother tells Sofia that she would never have let Sofia’s parents give her the nanobots had she known how much the nanobots numb one’s life. Sofia touches her Grandmother’s elbow warmly, and they walk together through the party.