Geronimo Stilton’s newest adventure starts on the note of something strange occurring at the New Mouse City. According to the news, rodents were getting hiccups and weird green warts, and were falling ill because of stomach upsets all because of cheese. And, cheese is something which the whole community of mice cannot live without.

Hence, Geronimo Stilton along with his detective friend, Hercule Poirat, goes into the mission of solving the mystery of faulty cheese. Will they be successful at solving this mystery that could save the whole mice federation?

Published by Scholastic in 2015, this book is available in hardcover edition.

Geronimo Stilton is a best-selling children's book series published by Edizioni Piemme of Milan, Italy, since 2000. Scholastic Corporationhas published the English version of the series since February 2004. Although the series credits its title character as the author, the idea was originally thought of by Elisabetta Dami. On older novels, the copyright is issued to a pseudonym "Geronimo Stilton"; this was changed on newer books. The books are intended for readers in the 6–12-year-old age range.