In the world of Arcana, a half future half fantasy world, two warriors are fighting a demonic entity, the warriors being one female and the other male. You choose a warrior, and the warrior you choose not to play as will be defeated by the entity and mind controlled into being their minion. The chosen warrior will be teleported into one of Arcana’s cities, New Lero. They are found by a quirky male scientist  named Eriko and an annoyed gunslinger girl named Juliette. Thus, the adventure begins..