Actor Jeremy Irons embarks on an epic journey through the halls of the Prado Museum in Madrid, Spain, two hundred years after its inauguration, along corridors where thousands of masterpieces of all time tell the lives of rulers and common people, and tales about times of war and madness and times of peace and happiness; because, as Goya said, imagination, the mother of the arts, produces impossible monsters, but also unspeakable wonders.