The story is set in the year 2015, during the final era over which magic still held sway. The humanity survival and security organization Chaldea was established to observe the world that can only be seen by magic and the world that can only be measured by science — as well as to prevent the final extinction of mankind. 

Thanks to the efforts of many researchers, the path of human history has been ensured for 100 years into the future. However, without warning, the realm of the future that was under constant observation by Chaldea vanished. The extinction of humanity in 2017 was observed — no, confirmed. 

The apparent cause of the extinction was in the Japanese city of Fuyuki in 2004. In that city, there was an "unobservable realm" which had never existed until now. 

Chaldea issued the Grand Order for a "Holy Grail Expedition," to investigate, uncover, and possibly destroy the singularity that apparently will cause the extinction of humanity.
 
(Source: Anime News Network)

More like (C96) [Prima Stella (Shachamo)] Ouhi-sama wa Midarana Maid-san | 王妃大人是淫亂的女僕 (Fate/Grand Order) [Chinese]

Our Recommendations

Fate Grand Order

Ouhi-sama wa Midarana Maid-san | 王妃大人是淫亂的女僕

Fate Grand Order

Ouhi sama wa Midarana Meido San

Fate Grand Order

王妃たちのセフレにされてしまったエリち

Fate Grand Order

Marie ni Yasashiku Shite Kudasai ne?

Fate Grand Order

Marie ni Yasashiku Shite Kudasai ne?

Fate Grand Order

Please, be kind with me, okay?

Fate Grand Order

Marie ni Yasashiku Shite Kudasai ne? | Por favor, sé gentil con María ¿sí?

Original Work

Namaiki Maid wa Goshujin-sama | 傲慢的女僕是我的主人

Fate Grand Order

Marie ni Yasashiku Shite Kudasai ne?

Fate Grand Order

Kyonyuu Seijo to Ouhi ga Noukou na Shitawaza de Kurikaeshi Nuite Kureta Ato ni Honban Sasete Kureru Fellatio Fuuzoku

Fate Grand Order

Kyonyuu Seijo to Ouhi ga Noukou na Shitawaza de Kurikaeshi Nuite Kureta Ato ni Honban Sasete Kureru Fellatio Fuuzoku

Original Work

Namaiki Maid wa Goshujin-sama 2-wa | 傲慢的女僕是我的主人 2話

Fate Grand Order

Kyonyuu Seijo to Ouhi ga Noukou na Shitawaza de Kurikaeshi Nuite Kureta Ato ni Honban Sasete Kureru Fellatio Fuuzoku

Fate Grand Order

Kyonyuu Seijo to Ouhi ga Noukou na Shitawaza de Kurikaeshi Nuite Kureta Ato ni Honban Sasete Kureru Fellatio Fuuzoku

Original Work

Namaiki Maid wa Goshujin-sama 3-wa | 傲慢的女僕是我的主人 3話

Fate Grand Order

Marie ni Yasashiku Shite Kudasai ne? | Please, Be Kind With Me, Okay?

Fate Grand Order

Maid o Sakae-san to Icha Love Sukebe Suru Hon | 和女仆阿荣打情骂俏干了个爽的本

Original Work

[Aweida] Ijiwaru na Do-S Maid o Wakarasetai Ojou-sama no Hanashi丨壞心眼的抖S女僕想讓大小姐明白 [Chinese] [沒有漢化]