The story is about a 15-year old Haibane boy dubbed Mado. Mado wakes up in an unfamiliar place called Stone Mill and learns that he's a Haibane, a humanoid with angel-like wings and a halo.
This fanfic provides examples of:
- Continuation: Mado of Stone Mill is a sort-of sequel to Haibane Renmei. It stars new characters but takes place in the same setting.
- Elsewhere Fic: The story stars a new group of Haibane that are separate from the anime's.
- Original Flavour: Mado of Stone Mill tries to emulate the style of Haibane Renmei.