A new teacher is staying after school grading tests for her class. When she glances out the window, she sees a student in an unfamiliar, old-looking school uniform, laying white powder lines in the schoolyard. The teacher steps outside to issue a warning, but the student is gone, and the white line continues into the school building. So she follows it inside to find the student...
that the white line had been drawn 
to lead them to the rooftop.
أنّ الخط الأبيض قد رُسمَ ليقودهم إلى السطح
Die weiße Linie war angelegt,
um sie auf das Dach zu führen.
supo que la línea blanca
era para atraerlos a la azotea.
supo que la línea blanca
era para atraerlos a la azotea.
che quella linea bianca era stata tracciata per condurre quelle persone fino al tetto.
que a linha branca foi desenhada 
para atrair pessoas até o terraço.