Hilarious, pitch-perfect stories where everyday school life becomes completely extraordinary!
 
By a brilliant author/illustrator team with laughs on every page!
 
Izzy's school is being merged with St Bartholomew's Primary, their greatest rivals!
 
What will happen when the new kids join, in their too-shiny shoes and with their too-loud singing?
 
And what if they've got a secret mission and that mission is a BAD mission?
 
Only Izzy and her friends can discover the truth, even if they must go SO DEEP UNDERCOVER that they might not come back . . .