What is the relationship between a helpless tax inspector, a garbage bag that moves, and the "Big Boys", who once again make the vaults of the city unsafe? Also the photojournalist Benno Blitz and the former photo model Molly Moll, who has blossomed into a singer Dolly Dur appear to be involved in the case. Nick Knatterton sets off to solve the case with the help of his extraordinary deduction skills.