 Moritz  class reads the novel "Die Buddenbrooks" from  Thomas Mann (I)  (qv). When Moritz complains about the fact that their business could have been much more successful, his teacher Heike Schmalz invites him to make it better and hands him a blank check. Some days later, she gets her money back including a huge profit. More and more people are interested in this business - and as usual, Wolfgang and Sibylle are the ones to know about it ...