An inflatable boy attends an inflatable school.
One day, frustrated, he stabs the inflatable headmaster with a pin, deflating him, then runs out and pops the inflatable school too.
Later, when the inflatable police and his inflatable mother confront him at home, he panics and pops himself.
Waking up in an inflatable hospital, he sees the deflated headmaster in the next bed, who shakes his head and says:
*"You've let me down, you've let the school down, but worst of all… you've let yourself down."* .