With the sudden departure of Mr Barker, there's a vacancy for a new head teacher at Dockbridge High and Mr Potter has his eye on his dream job. Unfortunately someone else does too...

Mr Christopher is searching for talent in his quest to find Dockbridge High's next top teaching assistant, and Mr Capp falls foul of one of Hillary Head's new rules.

Outnumbered by the children, head teacher Hilary Head calls for backup from some very unusual supply teachers, and a bromance blossoms for Mr Capp.