This book is about how Geronimo has an important envelope given to him on the day of a meeting. His Grand-father Willy holds a meeting.
So he tells Geronimo to go get the envelope he received in the morning. So he goes back to his room and tries to get it. Once he opens the door, the envelope flies out of the window. He soon tries to find the envelope and his friend Kornelius tries to help but Geronimo resists, in the end, Kornelius finds the envelope.
I picked this book because I enjoy reading Geronimo Stilton series. I find the books very interesting because it has adventure, and it shows how Geronimo goes through it. I finished the book because I wanted to find out if Geronimo finds the important red envelope at the end.
I would recommend this book to people who like adventure books because this book series are full of adventure.
