Story + Screenplay script

Order Description
I need help on developing a story and to have a screenplay script of it. I will be making it into a actual video afterwards where both stop motion animation and 2D animation will be combined.

Here’s a example video to show what I mean by combining both techniques, however I would like to have a more interesting storyline.
Basically the message I mainly want to bring out is that to show the interaction between the digital world and the physical world and how the computer can connect people together but also create
barriers – that’s why it is important to have physical approach and why the character at the end will yearn to meet each other.

The story requirement is:
-have pencil/pen and eraser as the main character
-have the link to 2 worlds (real world – stop motion, laptop world – 2D)
As the story will need to be filmed afterwards, I hope that it will be simple and the real world(stop motion) part will be easy to film and doable.
Both characters can either talks like human or have the cartoon mumble sound like Pingu.