Custom page generated from feed

Hi guys, I’m relatively new to wordpress plugin development so this may seem trivial.

My problem is that I need to be able to create a page from a dynamic source which is not a post. The url would be something like https://site/hook/id/slug where hook is the identifier that we need the dynamic info, id is the id to be retrieved and slug is some generic text for seo purposes. The id would then be used to make a call to a web service and retrieve some information that would then be rendered out onto the page.

The links to the pages will dynamically exist on the site due to the fact that another call to the web service pulls a feed which has the id required for the url.

If anyone could help me with this I would be greatly appreciative.

Kind regards,
Tim