In this chapter, we learn that the students who have gone missing are the ones who came last in their class. This means that after the third month of the exam, the missing student will be back at the top of the class, and his grades will have advanced to the seventh grade. The students wonder what should they do if this happens, and they decide to follow the last ranked student after school to find out what has happened to him. They decide to search for a laboratory that can make people genetically modified. They wonder if they will be able to be recycled.