You can choose what you want. You can talk with the real Jeanne d'Arc in 1429, help her in her fight aganist the British, and along her become friends with her, become part of history, or even change it all; Before she became the simbol of France and a saint.

Or if you want you can enter France in the historical era you want, were Jeanne is already the simbol she has become, and create your own realistic or fantasy scenario.