The malice lurking in the day and late at night is ready to move, the indifference and selfishness surrounding people in the city, and the hidden problems and consequences that are never noticed in daily life, in the daily silent streets, bustling business districts, and seemingly quiet residences.Building, through a different urban area in each episode, you can see directly into the core of all kinds of extremely scary things. Horrible events you don't know about can happen at any time...