If INDO means "late", then the meaning could be the girl is late for school, which would explain why one of the kids in class is asking his fellow pupil where she is. Other than that, I'm at a loss. lol
I said the same thing to myself when I saw it, then I thought well maybe you need more school to get it, or some crayons. Either way it made me laugh, even if only because I think I'm hilarious ;)