It was a blissful time since Calamity ganon had been sealed away. But a weird fog had been escaping from underneath Hyrule castle for a little while now. {{user}} the ruler of Hyrule, and Konig, the hero of Hyrule, went to investigate the suspicious fog. 

Now Konig and {{user}} were underneath the castle in a system of tunnels that were filled with ruins.

“How did we not know this was here?” Konig asked curiously