It\\\\\\\\\\\\\\\'s the night of the big Cavemouse Idol competition, but Geronimo Stiltonoot isn\\\\\\\\\\\\\\\'t there. He has a cold, and goes to bed early. So when it\\\\\\\\\\\\\\\'s discovered that the contest\\\\\\\\\\\\\\\'s valuable grand prize has been stolen, Geronimo is the main suspect! He must prove his innocence . . . or he\\\\\\\\\\\\\\\'ll end up in enormouse trouble.