A cruise vacation for Geronimo and friends turns moldy when the ship is
commandeered by pirates!
Benjamin, Trap, and Thea are concerned that Geronimo
Stilton works too hard as editor-in-chief at the Rodent's Gazette. To get
him away from the office, they decide to investigate the mysterious three-headed
brie-smelling monster that is roaming around the port of New Mouse City. But,
things take a turn for the worse, as our heroes find themselves held trapped
like rats on a ship...commandeered by the dreaded Captain Blackrat. Will it be a
pirate's life for Geronimo and his relatives? Perhaps a cruise is the
vacation he was needing!