You don't know why. You were detained. Open the door and Escape!
Do you know why you're stuck here?
From now on, I will give you the basics you need to escape from here. Although it might be difficult, I think you are capable of doing it. However, the previous entrant did not persevere long enough, and met his end here. Don’t let this happen to you.
This locked door is only the smallest part of the trials you will have to face. So don’t give up easily!