After studying for the exam, you go to sleep and you are now sleeping peacefully. Then you are having an exciting dream that you are an adventurer and you are in a old underground. You are having an adventure in the old underground, but you are trapped in that place. You found a door, but you can’t open it because it needs some special key to open. In order to escape from the old underground you need to find that special key to open the locked door and escape from that place. Good luck and have fun!