貓是每個鼠輩心中最深的恐懼。Geronimo本來以為這是美好的一天，他剛剛編好老鼠市第一本電話簿，正準備享受工作後寧靜的片刻時，表弟Trap又希望他加入一場尋找傳說中「銀島」的冒險之旅。他們搭乘熱氣球出發，但在尋到寶之前，他們就遭到一群「海盜貓」的攻擊！Geronimo一行人究竟能夠幸運逃脫？還是變成貓族的晚餐？
Enter the world of Geronimo Stilton, where another funny adventure is always right around the corner. Each book is a fast-paced adventure with lively art and a unique format kids 7-10 will love.
Oh, what a day I had just published New Mouse City's first phone book -- and almost every single number was wrong My customers were out for my fur. So when Thea, Trap, and Benjamin asked me to join their quest for a legendary island covered in silver, I agreed. But no sooner had we set out than we were attacked by a ship of pirate cats They mousenapped us and threatened to make us their dinner. Would we escape with our lives... or find ourselves in the soup?