It's possible that:
* The title is incorrect or misspelled. Double-check the title and make sure it's accurate.
* It's a very niche film or a production from a specific region. Try searching for it online with more specific keywords, like "Legend of Party [year] [country]."
* It's a short film or a student project. These are less likely to be widely documented.
If you can provide more information about the movie, like the genre or where you saw it mentioned, I might be able to help you find the cast.