Diabolik narrowly escapes Inspector Ginko's latest trap, leaving his partner in crime Eva Kant behind. Furious, Eva offers Ginko her help in capturing him, but the former has to face first the return of an old flame of his, noblewoman Altea.
Captured by a ruthless gang of bank robbers, foes Diabolik and Ginko find themselves facing certain death. While Eva Kant and Altea forge an unlikely alliance to rescue their lovers, Diabolik reveals his mysterious past to the Inspector.
On an autumn night, in the deserted streets of a seaside town, Sara is fleeing from a party, convinced she has witnessed a murder. He finds refuge with Veronica, but does not know that the woman is the lawyer of an important industrialist, the alleged murderer.
