A seventh Singularity has been discovered in ancient Mesopotamia in the year 2655 B.C. 
 
The land of Uruk, governed by the wise King Gilgamesh after he returned from his quest for immortality, was grand and prosperous until three goddesses and countless Demonic Beasts appeared. These enemies have brought Uruk to the brink of destruction. With a Rayshift—a method of traveling across both time and space—Fujimaru and Mash journey to the land of Uruk, where they encounter the fortress city of Uruk and the Absolute Demonic Front, where a terrible battle against the fearsome onslaught of the Demonic Beasts rages. There, the citizens of Uruk, who live their lives to the fullest despite facing an existential threat, continue to fight for their future. Deities and Demonic Beasts attack with terrifying force, and mankind pushes back with all its might... This is the era where humans and gods are destined to part ways. 
 
Fujimaru and Mash, the pair who have fought through all six previous Singularities, embark on their final battle. 
 
(Source: Aniplex of America) 
 
Note: Based on the Babylonia Singularity of Fate/Grand Order, the Japanese smartphone role-playing game created by Delight Works based on the Fate series by Type-Moon.

Episode 0 - Initium Iter

Episode 1 - Absolute Demonic Front: Babylonia

Episode 2 - Fortress City: Uruk

Episode 3 - The King and His People

Episode 4 - Welcome to the Jungle

Episode 5 - Gilgamesh's Journey

Episode 6 - The Tablet of Destinies

Episode 7 - Diversionary Operation

Episode 8 - The Mother of Demonic Beasts

Episode 9 - Good Morning, Goddess of Venus

Episode 10 - Hello, Goddess of the Sun

Episode 11 - Temple of the Sun

Episode 12 - Death of the King

Episode 13 - Goodbye, Goddess of the Underworld

Episode 14 - Decisive Battle

Episode 15 - The New Humanity

Episode 16 - Awakening

Episode 17 - The Congress Dances

Episode 18 - Star of the Beginning, We Look Up at the Sky

Episode 19 - Absolute Demonic Front Mesopotamia I

Episode 20 - Absolute Demonic Front Mesopotamia II

Episode 21 - Grand Order

CloverWorks

Aniplex

Notes

DELiGHTWORKS

Fate/Grand Order Absolute Demonic Front: Babylonia