In 1218, life was in full swing at Münzenberg Castle. In the heart of the Holy Roman Empire, in the present-day state of Hesse, Eberhard von Münzenberg managed the estate, collected taxes and oversaw the care of the building. As an illegitimate child, Eberhard was not the real master of the place: it was his half-brother Ulrich I who owned the castle. In the midst of this emblematic picture of the time, a quarrel with another noble house and a marriage on the verge of falling apart upset the old residence, and all the organization of life that goes with it. Negotiations, intrigues and family stories shake up this microcosm.