MineTrapped-Stuck Underground

I have been working on this survival idea for a while and I hope you like it.

So you have been trapped in a 20x20 chunk bedrock box that is 48 blocks high.
You were trapped by herobrine who turns himself into the ender dragon and your goal is to defeat him.
You have to gather recourses in dungeons and make an underground home.
The Rules-
No cheating
Change to survival right away
No taking credit for this map
Have fun

Additional Notes

I have forgotten to change the gamemode so when you start do /gamemode survival to change to survival.

Please give diamonds if you like it or give some comments or advice

Have Fun---------------------------SirVidGames-----------------------------------------