Kato takes the heat for the handling of the embassy case. Daisuke checks out the device left behind by the suspect, but for some reason his AI butler, HEUSC, refuses to listen to his commands. Cho-san also investigates articles left behind at the crime scene and pursues the case from a different angle with the help of Kato. Their investigation leads them to a woman named Imura who works at a manufacturing company. However, Daisuke's actions interfere with their meeting with the woman.
Now, those sea grapes
that were used in the jamming device...
إذا، بخصوص عنب 
 .البحر  ذاك الذي استخدم في جهاز التشويش
Sagen Sie, was die Seetrauben angeht,
die für den Störsender benutzt wurden …
Estas uvas de mar fueron usadas
en un dispositivo de interferencia…
Pour revenir sur l’algue
utilisée dans le dispositif…
Bene. Quell'oggetto che somiglia all'uva di mare
usata nel dispositivo di disturbo...
Então, aquelas uvas do mar usadas
no aparelho de frequência...