To Diabolik and Eva Kant, this theft seems like the perfect plan. But little do they know that behind it lurks a trap set by the cunning Inspector Ginko; one that will put their partnership to the test. When Diabolik abandons Eva during the escape, she decides to seek revenge by offering to help capture Diabolik. A difficult decision for Ginko, who must also deal with the unexpected arrival of Altea, Duchess of Vallenberg...