Fate/Grand Order -絶対魔獣戦線バビロニア-

Ritsuka Fujimaru and his demi-servant Mash Kyrielight rayshift to ancient Mesopotamia, the Seventh Singularity of roughly 2655 BC, to retrieve a Holy Grail threatening humanity's timeline. In Uruk, King Gilgamesh commands the city's defense against the Three Goddess Alliance, whose forces are steadily consuming the surrounding lands. Ritsuka must forge alliances across the battlefield to protect the last stronghold of human civilization before it falls.