Are the world we see in our daily lives really the true world? It is said that the human brain unconsciously controls and deletes information it does not need to see. However, this is not the case with machines. We find ourselves surrounded by countless surveillance cameras above our heads. It is said that there are more than 4 million of them in Japan, and they capture more than tens of millions of hours of images a day. But is what we see on these cameras really the same world we see? The surveillance camera above your head sometimes becomes a gaze into the world of the dead. The strange phenomena captured in these images may be the form of the grudge and regret of the dead, trying to tell us the truth....