Geronimo Stilton is granted a specialinterview with the great Sourishi, who lives in isolation and rarely givesinterviews. To reach him, Geronimo and company must take the Rodent-Express, asteam engine that zigs and zags across perilous terrain and steep mountains. But, during the journey, Bugsy Wugsy mysteriously disappears! Can Geronimo crackthe case before the end of the line? It won't be easy when all thepassengers are now suspects.Based on the hit animated series!