The series operates on the fictitious premise that Italian Spiderman was a 1968 Italian action-adventure film made by Alrugo Entertainment. In the middle of a party, an asteroid from a distant galaxy falls to Earth and is taken by professor Bernardi (Carmine Russo) for research. He discovers the asteroid has a substance that can create duplicates from any living being and decides that Italian Spiderman (Franco Franchetti), a fat, rude and powerful superhero, is the only man capable to have custody of the valuable asteroid. As soon Professor Bernardi gives Italian Spiderman the asteroid, he is attacked by the terrible Captain Maximum (Leombruno Tosca) who is interested in using the asteroid for his own evil plans...