School is out for the summer, and the Dunderheads are finally rid of the awful Miss Breakbone - or so they thought! After a string of burglaries strikes town, Miss Breakbone steers her barrel-chested brother, Inspector Breakbone, towards those meddling, good-for-nothing Dunderheads. But can the gang track down the real criminals?School is out for the summer, and the Dunderheads are finally rid of the awful Miss Breakbone - or so they thought! After a string of burglaries strikes town, Miss Breakbone steers her barrel-chested brother, Inspector Breakbone, towards those meddling, good-for-nothing Dunderheads. But can the gang track down the real criminals?