Two female university students open a detective agency and use their feminine charms to find a missing girl for a client. But they soon get in over their heads as the trail leads them to the seedy underworld of massage parlors and criminal gangs.

A simple diamond heist leads Lupin into the machinations of a bizarre cult based around the prophecies of Nostradamus. They kidnap Julia, the daughter of Douglas, a wealthy American who is seeking the presidency, along with Lupin's diamond. At stake is the lost book of prophecy Douglas holds in the vault at the top of his skyscraper.