Kamui, a fighter from the 6th Holy Grail War, wakes up in a park of Tokyo after an intense skirmish. Confused, she will soon learn that home is out of reach as their are no such thing as a Mage's Association. Starting from nothing in a familiar yet new world... What could possibly go wrong?

Zelretch flings Shirou off into another world and tells him to await rescue via Rin. Easy task right? Wait a second what's with all these phantasmal beasts and why do they look like people?