A mysterious fog swept across a city, taking away people lost in the fog. Those were brought to another world by this fog. There are many weird things in this world. After seeing their companions die tragically, they want to find a way home in this weird world. After untold hardships, they finally got some clues, but as soon as they got a few clues, they encountered the most terrifying disaster in this strange world - the catastrophe of heaven and earth...
