Four freaks perform there: Matilde, a girl who produces electricity and electrocutes anyone who touches her; Cencio, an albino boy who can control all insects; Fulvio, a "man-beast" suffering from hypertrichosis, and therefore covered in hair from head to toe, endowed with superhuman strength; and finally Mario, a dwarf with a slight mental retardation and the ability to manipulate metal objects.

The Zircus is actually the realm of Franz, a German pianist with six fingers on each hand who possesses clairvoyant powers: he had a premonition of Hitler's suicide and the arrival of four beings with superhuman powers that could save the fate of the Third Reich (as well as various events and inventions that will happen in the years following the end of the conflict); for this reason he created the Zircus in order to gather all the freaks in the area, who undergo deadly torture in an attempt to identify the saviors.

After fortunately escaping a roundup in an attempt to go looking for him in Rome, the four decide to separate: Matilde, the only one who believes in Israel's good faith, leaves to look for him, while the other three go to the Berlin Zircus.

In pursuit of them, the German kills Amon and assumes his identity, wearing his uniform and even cutting off his excessive fingers, and then places himself at the head of the army.

When Israel sacrifices himself to save her life, Matilde finally succeeds in taking full control of her power and concentrates it in a huge explosion of energy, which annihilates all the German soldiers.

While witnessing the death of his fiancée Irina, Franz understands that his vision was not about Hitler's suicide, but his own: in fact, shortly after, realizing that his plan failed, he kills himself.