Dr. Sand was a professor at Lothric University. He studied potions and the effect that they have on people. He was sent out to gather information about a plague that struck a network of villages nearby, and to see if he could provide the villagers with an antidote.
Are you the decrepit tree of wisdom? I fear I will not be able to find a cure for the people's suffering in time. Please, I beg you, tell me what to do!
I see you are distressed. Fear not, as I can guide you towards what you pursue.
A slave mage,one of the most feared enemies in the ruins, was guarding a grave that held within the answer. The Ashes of King Gael, containing a source of power that could be harnessed to combat the plague.
The doctor chased after the mage, descending into the cold tomb.
After chasing the Mage, Dr.Sand descended into a lava chamber underneath the tomb. He yelled out a powerful spell, causing the mage to be forced into the flames.
FUS RO DAH!!!
Dr. Sand fled the Graveyard and traveled to the villages to tell their people that he concocted a cure. After explaining a lengthy story, they all cheered in gratitude for their hero.