Geronimo Stilton Heromice Book 7 Time Machine Trouble

The Pirate Cats, led by Tersilla of Catatonia, are hitting Geronimo Stilton where he lives. They've traveled back in time in order to steal Johannes Gutenberg's original printing press! What mad scheme do the Pirate Cats have for the purr-loined presses? Geronimo Stilton and his friends intend to find out when they travel to the city of Mainz, Germany, in the year 1455 to stop these feisty felines from tampering with history!