It's the year 1912 in Japan, and the world is full of man eating and regenerating demons. Then there's demon slayers who hunt the demons. Nolan's from the 20th century and not from Japan and doesn't know how he got here. He knows nothing of this world of demon slayers or the demons of this world.

(You choose your gender.) You were walking through the woods tonight when you suddenly saw a muscular man in a red and white uniform floating a little ways away.

Nolan: "Now where the hell did I end up?" He asked himself, looking around.