You have 24 hours to save the world, solve quests/sidequest, find out what is happening & save the world.
A mysterious disease has appeared. Where does it come from and how can you stop it? You only have 24 hours to stop the disease because it seems to kill you after 24 hours.
Talk to characters and get the right equipment & items to get to the cause of the disease & to stop it. Be aware that other characters in the map are affected by the disease too, though. Some of the character will die pretty fast and will make certain sidequests unavailable. And other characters will leave Glimford at a specific time.