Brett and Rose, the husband and wife owners of German restaurant Haus Murphy, disagree on almost everything, particularly the hiring of Rose's nephew as their new restaurant manager. Fearing he is unqualified for the job, the couple hires Charles Stiles and Mystery Diners Danny, Chris, and Deanna to go undercover and show them just how incompetent their nephew truly is. After the proof is shown, this leads to the confrontation where Rose ends up having to let her nephew go from his employment.