The Lake Constance region is not as peaceful as it seems where a number of sophisticated crimes are committed. Private detective Max Marek and his girlfriend Simone from the German police hunt down the "Godfather of Lake Constance".
Helen works undercover to get more information about Gregor Canalis, the "Godfather of Lake Constance" while the famous German singer Matthias Reim is drawn into a spectacular blackmailing during the Bregenz Festival.
During carnival, four gangsters dressed as witches rob a bank. Max Marek suffers a psychological trauma and leaves the region while his mother Andrea takes over with her nephew Mike. Meanwhile, there is a new "Godfather" - Jo Rammlinger.
Joy approaches art patron Robin von Wilcke and steals one of his paintings. The well-known Austrian auctioneer Wolfgang Pauritsch then sells the painting at a private auction where Robin shows up by surprise.
Gangsters hijack the "Lädine", a tourist sailing ship, and Turi von Rickenbach's Cobra sports car has been stolen while Andrea Marek is trying to get it back. Turi and Jo Rammlinger are increasingly becoming rivals in car races.
Turi's daughter Severina is being kidnapped by Jo Rammlinger. Her father has to pay 2 million to get her back. Jo sets two gangsters on him, who not only steal his Lamborghini, but also set him on fire.
An epic showdown between Turi and Jo Rammlinger is in the offing. Turi wants revenge and dreams of one last western gunslinger duel against Jo, while Joy tries everything to win Mike back.
It turns out that art patron Robin von Wilcke is a drug dealer. A bank is broken into and a valuable Dali painting is stolen. journalist Edgar Hofmann discovers, the bank is not acting as lawfully as it claims.
Jo Rammlinger wants to get into the cannabis business and uses panettone cakes to hide his illegal goods. Not amused by Jo's meddling, Robin kidnaps and forces him to be his runner. He also threatens Mike who has to find a way to escape.
Jo wants to get into the arms business which Is getting very dangerous as he's working against Robin. Mike has stolen a Da Vinci sketch from the Body Worlds exhibition, but his uncle Alfred is hot on his trail.
Mike Marek and his partner Caro split up. He meets the attractive Esther and asks her to help him on his missions.. Gangster Jo Rammlinger is still up to mischief and is fed up with his adversary Robin.
A professor at CERN wants to illegally sell a sensational invention. Mike Marek tries to prevent this while Jo Rammlinger orchestrates the theft of a fighter bomber at the military airfield. It heats up to a showdown between Jo and Robin.
