The play is set in the early 1990s at the West Berlin office of a British car company.
Peter Fisher, the manager, is finding it difficult to sell British cars to the German public, who are buying BMWs and VWs.
He is also a secret agent, though clearly not very good at it.
His mistress, Heidi, shows up, complaining it's too hot, leading to a comical suggestion that she sunbathe on the roof.
The situation escalates with the arrival of Mitzi, a scantily clad singing telegram girl, who is hidden in the kitchen and eventually asked to make an omelet.