Downloading Facebook stories and videos from story-fbid URLs requires third-party tools or the "mbasic" browser method, as Facebook lacks a native download button. Effective methods include using web-based downloaders like FDown.net, browser extensions, or replacing m.facebook.com mbasic.facebook.com to save the video file directly.
If you provide the specific story_fbid number, I cannot retrieve or download the content for you, as that would violate privacy and platform policies. Https M.facebook.com Story.php Story-fbid Download
Download via the Facebook Graph API (authorized, developer approach) Downloading Facebook stories and videos from story-fbid URLs