Customs officer Kressin is on holiday in Hamburg and sees the tour guide acting suspiciously. He ignores it, but the day after the guide is found dead in the water.
Customs Investigator Kressin is on his way back home when he notices the strange behavior of tourist guide Ben Canitz. The next day the Papers read that Canitz has been killed. Kressin teams up with investigator Paul Trimmel in Hamburg and soon discovers a gang of drug smugglers. Can they stop the smugglers and arrest the killer?—Troll