Prologue

The famous Geronimo Stilton and his family are very curious when their grandfather informs them that a few mystery guests come in for an interview. When the interviewees arrive, The Stilton Family gets quite the shock when they turn out to be the villains turned vigilantes, The Bad Guys. However, as things go on, they group gets a nasty surprise, as several of The Bad Guys adversaries arrive in the city. As if things couldn't get worse, the city begins blaming The Bad Guys for bringing the villains to the city. However, The Stilton Family and The Bad Guys realize that they may be being set up, and they must work together to find out what's going on...