A wave of sophisticated raids keeps the whole country in suspense. They say that a well-disguised "gang of chameleons" is behind this. It is curious that the time and place of the break-in coincide with the tour schedule of the fashionable duo. Are musicians behind the crimes? Bob goes on tour and works undercover. Will three question marks be able to prevent a big coup of robbers and condemn the gang? Together with detectives, investigate an exciting case between Rocky Beach, California's wine region, and San Francisco.