Many amazing secrets are kept by the walls of ancient Baghdad, but even more are hidden behind the walls of the palace of the Commander of the Faithful, Harun al-Rashid. For the reasons for the sudden madness of the ruler, who suddenly forgot the entire palace ritual and fairly surprised the wise men of the divan and the servants with his speeches and attire, are shrouded in great mystery. They are still gossiping in the Baghdad bazaar, which forced the Caliph to lock himself in his chambers. No one knows... Only the venerable Maruf, the shoemaker, knows about this, but he is silent...