Seventeen-year-old Roxane is about to go back to school, but she can't remember how she got home. She's confused because she's been in high school all along. She remembers that she was in class with a girl named "yuanzi" , and she thinks that this girl is the same girl as her in class. Roxane says that she and her friend didn't really know each other in school because they only knew one another when they were in university, but now that they're both older, it's clear that they have a lot in common.