背景设定在一个反乌托邦的美国，所有非异性恋、白人、基督徒和顺性别的人都被政府用条形码跟踪。

　　When Cassandra's motocycle breaks down while she, Gersinho, and Leide are coming back to Sao Paulo from a math competition, Leide calls Cassa ndra's mechanic father. A painful confrontation with the past follows.