Set in a fictional 19th century England, D.Gray-Man is the story of Allen Walker, a 15-year-old boy who roams the earth in search of Innocence. Washed away to unknown parts of the world after the Great Flood, Innocence is the mysterious substance used to create weapons that obliterate demons known as akuma.

Believing he's finally taken care of Tyki Mikk, Allen is brought up short by Road and presented with a stark choice - if he wishes to rescue Lenalee and Chaoji, he must destroy his friend Lavi! Allen refuses to do it, little realizing that the choice is not what it seems. Lavi knows what's up, and may be the only person who can turn the tables on Road. Has Road, however, destroyed his will to resist?