I'm just posting my result right here. If you'd like to download the animation test I created, just grab it
here. It is a custom story folder, so to test it, just drop it into custom_stories.
Basically it contains 36 individual frames each stitched to a plane model. Each of them have their own entity associated and with the script, each is replaced with the next frame.
Here's the gif I used (apologies if it is somewhat offensive.)
I've heard there is a much simpler way to do this using the material editor to create an animated material. That would certainly be more comfortable, as this short animation I made took me roughly 2 hours to make.