A lifeguard at Lake Müggel has his hand bitten off and the marks indicate a shark attack. The lake is closed to the public by extending a local festival indefinitely while the city council thinks of what can be done to remove the shark. The public becomes restless having their lake closed for so long and come up with a plan to drive the shark from the lake with large quantities of beer.

Henry Hübchen
as Bürgermeister Müller

Michael Gwisdek
as Bademeister

Benno Fürmann
as Der reiche Mann von Friedrichshagen

Tom Schilling
as Fischexperte von der Humboldt-Universität

Uwe Dag Berlin
as Snake Müller

Annika Kuhl
as Gabi Müller

Leander Haußmann
as Taucher / Kreuzberger / Mundharmonikaspieler / Pantomime

Sven Regener
as Taucher / Kreuzberger

Detlev Buck
as Polizist

Anna-Maria Hirsch
as Vera Baum