The protagonist was originally an overworked office drone who, while walking home late from overtime work, accidentally fell into a pit and crossed over into the world of Soul Knight. Upon landing, they were immediately tricked into a dungeon by their "conscientious teammates," left alone to face the oncoming horde of monsters. In order to survive and return to their original world, the protagonist bravely ventures deep into the dungeon, meeting many companions along the way and stirring up all sorts of amusing "odd incidents"...