I'm not so sure this is the case. I'm now leaning towards no electrons
stored on the plates, but the "charge" is stored in the field, which is then
able to induce a current in the plates when it collapses (when it is
"discharged".
Electrons are stored in plates.
If the charge between the two plates is different, then an
electrostatic field is created. It's electrostatic because there is no
movement of charges (the charges are static).
You can think of the field like gravity. The charges are like mass.
If there are two bodies with mass, then a gravitational field is
created between them.
Paul
