If you have a file named LEGO Star Wars - The Clone Wars.zip , "useful story" could refer to a few things: LEGO Star Wars III: The Clone Wars Save Game Files for PSP
It introduced "Scene Swap," allowing you to jump between different characters in separate locations to solve a single objective.
It sounds like you might be looking for a breakdown of the story within , or perhaps you've come across a specific file and want to know what "useful story" it contains. The Game's "Story" Content
Completing the main story often unlocks special cutscenes, such as the ghost versions of Anakin, Yoda, and Obi-Wan in similar LEGO titles. Why a ".zip" File Might Be Called a "Useful Story"