2 years has passed after the 5th Holy Grail War ended, a new organization called The Heaven's Fallen had recreated the ritual to obtain the Grail in hopes of creating a new world order for magus in a global scale. The Mages Association and the Holy Church learned of their intentions and are dispatching 7 mages to neutralize the new threat and to finally eliminate the last vessel of the Holy Grail. Unknown to them it's that the last vessel is someone familiar to them, someone dear controlled by none other than Zouken Matou and his worms. The newly-formed group has only 14 days to bond between them and win this conflict, named "The Greater Grail War". This will be decided with the clash of 7 vs. 7 battle between Servants and Masters, with the fate of the world resting in their hands. (A fan-made sequel to Fate/Stay Night: Unlimited Blade Works. I don't own anything in this story, just only the plot, the characters, setting and such are owned by Type-Moon)

In the year 2023, Chaldea Security Organization has completed the Fate project and has assigned one of their Security Officers as a Master to a Heroic spirit with the goal of destroying or retrieving the Holy Grails when and wherever they might appear. Stopping whatever threats are summoned in the process from causing any further harm, and preventing the destruction of Humanity.