Story Of Bones And AshesStory of Bones And Ashes; 뼈와 재, 불의 이야기; The story of bones ashes and fire; Реинкарнация скелета; Reincarnation of Skeleton

One day: Portals suddenly started appearing all over the world. Powerful monsters coming out of the space inside the portals called Dungeons, and the awakening of people and living beings to defeat them.