After the end of the Crusades, it appears for the first time: the Philosopher's Stone, with which one can make gold - dangerous gold, radioactive gold, to be precise. The stone leaves a trail of devastation across Europe. The Teutonic Knights declare it their secret new mission to find and safely guard it. For all eternity. However, in our time, two brothers are on the trail of the stone's true secret: it is a key that could change all our lives for the better. Or does it open the gates of hell?.