Washed away to unknown parts of the world after the Great Flood, 15-year-old Allen Walker roams the earth in search of Innocence--a mysterious substance used to create weapons that obliterate demons known as akuma.

Washed away to unknown parts of the world after the Great Flood, 15-year-old Allen Walker roams the earth in search of Innocence--a mysterious substance used to create weapons that obliterate demons known as akuma.