Host Alex Goldman helps Casey, a librarian obsessed with obscure history, solve the mystery of a button advertising "diarrhea-inducing chili cheese fries." The button features a fake address in Custer City, Oklahoma, leading Casey to believe it was from a real, lost restaurant. The team traces the artifact to Nick Rowley, a former Busy Beaver Button Museum employee who created it as an elaborate prank designed to confuse future finders. The episode concludes with Casey receiving a physical copy of the button and having his name immortalized in the museum’s online archive.