People from all around the globe are randomly chosen and teleported to a magical world. They lose all their memories about themselves and are given no explanation as to what is going on. There seemingly is no way for them to return to their old lives. They have no choice but to brave the new strange world. The good news is every person gets a videogame-like system. The bad news is death is permanent even in this game-like world. Danger awaits around every corner, and there is no tutorial on how the system works. Surviving is not going to be easy for anybody. The rules and laws of the old world don't apply in this place. Whoever ends up here has to quickly adapt to this new harsh reality if they want to survive.

Just like many other people before him, Jack Nolan has been teleported to this magical dark world. He was just a regular guy without any combat skills. But to survive in this dangerous world, filled with all kinds of obnoxious creatures and monsters, he has to become a fearless warrior. Choosing the path of a spellsword, he begins learning magic and teaching himself the art of swordplay. Surviving one day after another, he is gradually getting stronger and taking on more and more powerful monsters. But in this dangerous world, any day can be his last. How much longer will he be able to survive? Along the way, he solves many mysteries of this world, but will he ever be able to find the answer to the main question: is there any way to get back home or is he doomed to live in this grim world forever, fighting every single day for his life?