Titus Thalhammer (Dieter Fischer), a long-established showman and Ferris wheel owner, fights together with his fellow showmen, the crêpes stall owner Ibiza-Kurti (Sebastian Edtbauer) and the flea circus director Edi Rainer (Andreas Bittl), against the beer barons and Oktoberfest landlords who are increasingly encroaching on them on the Wiesn grounds. Even the long-established Mimmi Birnbaum (Heide Ackermann) with her mobile cotton candy stand rails against the new Wiesn customs and mourns the past.
Titus' greatest enemy, however, is his ex-wife, the newly widowed, very capable Oktoberfest hostess Heidi Deixl (Ursula Burkhart), who left him after many years of marriage for a wealthy Oktoberfest host. A deep wound in Titus' heart, which he tries to compensate for - to the chagrin of their daughter Tschosi (Katharina Plank), a passionate steep-slope skier - with selected vulgarities.
But Heidi knows how to defend herself: The expansion of her pub garden and the necessary toilet facilities is moving ever closer to the three friends' neighboring fairground businesses. When an endlessly long piss chute is erected directly in front of the Ferris wheel, Titus launches an extremely cunning counter-attack, which ultimately brings him and his friends to the brink of extinction like a boomerang. Even his tenderly flaring love for the beautiful and tough mermaid Loreley (Julia Urban) seems to be on the brink of collapse. Only with his old tortoise Adenauer does Titus find some emotional support during this difficult time.