Nathan finally decides to ask Miss Poppy out, but it's on the day that Mr Bell is to select a head of year, and Josh is determined that Nathan gets the post instead of Thorne. Nathan is too distracted by a misunderstanding about the date, so Josh concocts a plan to help Nathan's bid for the job. But without Nathan's help, Josh has to turn to new music assistant Dexter for a solution.

Bell initiates a big clampdown on security and truancy in school, meaning there are no more visits to the ice cream van just outside the front gates. But worse for Josh, there's a game he wants to buy in a shop that is shut out of school hours. How will everyone beat the security lockdown?