Synopsis

A mysterious figure named Walker Elbin explains to newly transported Earthlings that they are in a world where survival is difficult and that they are shielded by a wall. He reveals that angels and demons are the real threat, and introduces them to Melun, the first village, which offers them temporary aid. The group realizes the importance of finding a way to return home, and one character discovers a diary which contains cryptic information. Finally, the main character is invited to join another clan.