In late 1938, two girls flee from their university in Paris after learning of an SS plot to murder them in an attempt to seize the most powerful ancient relic of all: The Holy Grail. With Gestapo spies setting them on the run, the two must now comb the Holy Land for clues to uncover what it is about this Christian relic from Arthurian legend that could not only subvert a völkisch cabal's conspiracy to create a state-endorsed imperial cult, but also redefine all of the Abrahamic religions.