some thoughts... add a new additional_image_field ... Story : yes / no ...
... show this field in image upload form ...
... use the description / -field for your stories ...
... or add a new additional_image_field ... Story : text ...
... than show this field also in image upload form ...
... to show story with image/thumbnail on index.php/home.html use the code from "MOD Last comments" similarly ...
... thats all ...