Keiko, Kenzo and Eji are excited to be in the forest of Sarawak forest in East Malaysia with their grandparents. Their grandfather's phone mysteriously disappeared from the car, leaving a strong stinky smell. Keiko, Kenzo and Eji start tracking the secret with a newly invented device call the "Sniffanalyser." They are determined to hunt down the thief, but misfortune strikes. What will happen to them? Share their adventures in the book.