人理延续保障机构.迦勒底，长年观测到诸多证据证实2017年人类即将灭绝，为了延续人类的生存，迦勒底进行制造亚从者实验，以获得对抗威胁的武器。罗马尼不忍心实验体──名为玛修的少女饱受肉体折磨又要背负如此沉重的责任，自愿担任她的主治医师照顾她。

First recapitulative episode of Fate/Grand Order - Absolute Demonic Front: Babylonia concerning events of the first half of the series.

Second recapitulative episode of Fate/Grand Order - Absolute Demonic Front: Babylonia concerning events of the first half of the series.

TV Special 2020.