All Katherine McAndrews wanted was a tutor for her upcoming exam. Sounds fairly easy to obtain right? Instead the tutor--a gothic, stoic girl named Muchiko Kisaragi--has involved Katherine in a devious plan to try and find her sister, Harumi Kisaragi, after a gruesome murder in an anime convention. After finding out that Harumi's next target is a popular teen idol in Russia, Katherine and Muchiko convince the idol's best friend, Natasha Nikulina, to go with them. Their arrival in Europe does not go well with the locals; especially when the majority of the locals get killed using unusual punishments from the Bible. From evil frogs, a huge earthquake, and tons of explosions, the trio will have to go through Harumi's own biblical tortures in order to track her down. When they discover Harumi's actual plan for the continent's inhabitants, the trio must hurry or Europe could be stained in blood forever.