So, a bunch of us run into the dining hall.
'Harvest festival display!' I shout, 'follow me!' Dexter and me leap over the neat rows of tins-of-food-that-you-never-eat-unless-you-are-absolutely-starving.
'Get behind the giant vegetables!' I yell. We are quite lucky because, Oliver-James's mum and dad are very keen on growing big veg. They brought in the biggest potato in the world on their roof rack. It took 10 juniors to lift it down.
I peep round the side of a monster cabbage.
Mr Bagnall strolls in. I think he is smiling but the moustache makes it difficult to tell. 'Well children, I have locked the outside door - you're safe.
Somewhere inside the school, some baby children scream.
'I don't think a locked door will stop Mrs Trundle,' I point out. 'She keeps a laser cutter in the caretaker's shed.'
'She's in!' shouts Tyler. Mrs Trundle charges into the hall. He arms himself with an oversized carrot.
'This is brilliant,' says Dexter, picking up a tin. 'It's like all those battles in Lord of the Rings or world war 1 or something.'
Mrs Trundle does some impressive Stick of Doom manouvres as she thunders towards us.
'Come out!' she screams. 'Those giant vegetables won't save you now!'
Mr Bagnall and his moustache leaps in front of her and we cheer. 'Remember your training! The children are your friends!!'
'HA!' she cries, then 'HA!' again.
'Don't make me say it,' says Mr Bagnall, 'just give me the stick and I won't say it...'
I look at Dexter and he looks at me.
'PUT THE STICK DOWN ... PRUNELLA!' shouts Mr Bagnall.
It is like the pause button has gone on until Dexter stands up.
'Prunella!' he says, 'is that her name?'
Everybody starts mouthing the word, 'Prunella.' I think it must be like when you know the real name of a demon or a wicked fairy and just by saying it, it takes away their power.
'PRUNELLA!!!' we all shout at her. 'PRUNELLA! PRUNELLA!'
She drops the stick and runs from the hall. Victory is ours.