In a Holy Grail War, Mages (Masters) and their Heroic Spirits (Servants) fight for the control of the Holy Grail—an omnipotent wish-granting device said to fulfill any desire. Years have passed since the end of the Fifth Holy Grail War in Japan. Now, signs portend the emergence of a new Holy Grail in the western American city of Snowfield. Sure enough, Masters and Servants begin to gather... A missing Servant class... Impossible Servant summonings... A nation shrouded in secrecy... And a city created as a battleground. In the face of such irregularities, the Holy Grail War is twisted and driven into the depth of madness. Let the curtain rise on a masquerade of humans and heroes, made to dance upon the stage of a false Holy Grail.

Presumed dead, master con artist and recovering amnesiac Dorothy is discovered by Shanghai Longu-bang, a mob who wants payback for her conning them. With no memories and nowhere to go, she must rely on a local crime underboss to elude Taipei's criminal underworld all while tracking down leads to her mysterious past.

One day an idol is bitten by a zombie and before she is taken into custody, she runs away. She only has 72 hours left until she becomes one, so she tries to find the zombie serum, but high school girl zombie hunter and zombies attack her. Will she make it to the destination within the time limit?

Revisit Bocchi's journey to playing at her school festival and friendship with Kita.