Her son has disappeared, vanished into the urban jungle. He has always been a free spirit and has chosen a life on the streets. Only his graffiti tags prove to his mother that he is still alive. She begins to search for them all over the city, documenting them and thus reassuring herself of his existence. And she interprets them as a sign for herself. She finally responds to his graffiti with her own tags on concrete walls, electricity boxes, and dusty windows. An unusual connection develops, giving her a sense of liberation and relief.