Centuries ago hyrule engineers discovered a material called Hyperion. It was a material that could power anything. The towns and castles have changed so much. Upon discovering this the engineers found a chest that was locked with a special lock. The hyroglyps on it said it contained the evils of the world

The only evil forces left in hyrule seeks out this chest and a wizard by the name of keygor

The chest is kept in a temple in the kingdom and is protected 24 hours a day 7 days a week

If the lock is opened a chosen one is chosen by the lock itself to seal the chest and seal the evils inside it once again. Deep inside the chest is the evil that is bound no limits. If this evil is released then our world is doomed.

The only way to seal the evils back is to lock talock with the master key blade. (Master sword.)

Or

(Ignore sora.)

This legendary blade is guarded by its last wielder. And if you wish to claim it you need to prove your worthy.