In 2015, Chaldea Security Organization combines professionals from both magical and non-magical fields for predicting potential threats leading to human extinction events. It appears that humanity's survival is secure for the next century until a sudden shift occurs in late 2016. The cause of this change remains unknown but seems linked with Fuyuki, Japan during the Fifth Holy Grail War in 2004. To prevent this catastrophe, Chaldea employs Rayshift technology, an experimental time travel method. With it, Ritsuka Fujimaru and Mash Kyrielight journey back to 2004 to uncover the reason behind the impending doom and find a solution to save humanity. This mission involves altering the past in order to safeguard the future.
Fate/Grand Order: First Order is adapted from the prologue chapter of the mobile game Fate/Grand Order.
Maaya Sakamoto