Chains of Change

There are things in this world. Things that you see ever day. But your brain doesn't exactly register what they really are. You see them as normal. Pass by them, not giving them a second thought. Little did you know that they hold the key to the world. To another world. A world that is hidden from mortal view.
A world that is full of terror and destruction.
There are reasons that these things are hidden. Hidden from plain sight. Out of mind for mortals.
The main reason is that it's an easy way for them to die.