Retired scientist Erwin Trautmann fell for the 'grandkid in trouble' trick, realizing only after paying she cant be abroad during exams, but was knocked down by the motorbike courier, which he fails to identify when the police, whom he initially tries to wave in ER out of embarrassment, lines up the suspect. While a social worker restores his confidence, the police realizes there's a well-organized gang at work. Tariq convinces Haller to allow setting a trap, assisted by Hans, but the bad luck seems to continue. Wolle wonders what a rich aunt left him in her will.