Professor Wiseman has a pretty interesting habit-building & fixing clocks. She has just finished work on a very interesting clock where a band comes out & plays every hour. But when Compass comes flying in & George tries to show him the clock he accidentally breaks it & then winds up taking it completely apart when he tries to fix it. George goes to the library to try to find out how to fix it but not from a book. The library has a big clock tower on top that the whole city depends upon. But when the clock's chime scares George he winds up breaking the big clock as well.