The joke is dead serious: Japan sends actual cops to fine restaurants for putting mayo on nigiri, and somehow this absurdist premise never winks at the camera. Every episode is a different country, a different cuisine crime, the same deadpan enforcement of sushi purity that should be insufferable but lands because the show commits completely. It's comfort food comedy where the punchline is that someone, somewhere, genuinely cares this much about culinary authenticity.
As sushi fever sweeps the globe ahead of the 2020 Tokyo Olympics, poorly made imitations of Japanese food spread everywhere. Japan's government answers by joining other world powers to found the World Food-culture Conservation Organization, which exists to protect and promote authentic regional cuisine. Its 9th Division, better known as the Sushi Police, watches over Japanese food abroad. Honda, Kawasaki and Suzuki make up this elite team. They roam countries such as the U.S., Russia, France and China, harassing anyone who serves inauthentic Japanese dishes, and they will do whatever it takes to wipe out bad sushi. Their heavy-handed tactics soon earn them the hatred of restaurant owners worldwide. On one mission they cross paths with Sara, a young television reporter determined to expose the unit and the organization behind it as corrupt. She slips away after they question her, and a chain of events begins that will bring the real purpose of the Sushi Police to light. The result is a short-format comedy built on this extreme campaign for culinary purity.