Matthew repairs Sooty's wand that Scampi has broken and magics a customer. It is Mr Dwayne from the Water Board, who asks them to help him make water more interesting. They all set about the task - Mr Dwayne gets covered in gunge in the process. Sweep and Scampi make a machine that produces "aerated water" (foam), which goes out of control. Sooty takes it to the tip, covering everyone on the way with foam.