Flautarion
What if Medieval Europe stumbled upon a magic secret that could revolutionise the world as they knew it?
What if, once informed of this secret, each ruler tried to keep it away from their rivals?
And what if it turned out everybody knew about the secret, but spent generations hiding their knowledge so well that nobody knew that everybody actually knew about it?
The secret is about to come out, though. The newest generation of soon-to-be monarchs and their "common folk" entourage are not keen on keep this secret nonsense. This is an idealistic generation who dreams of using the magic secret to create a perfect world, and they will stop at nothing until they do it.
Even if it means facing the wrath of their parents and causing a revolution just ot prove a point.