Modified TOC

Hi, I'd like to create an ebook based on a tag-based RSS feed from Archive of Our Own (AO3).

So far, I've gotten to a list of story titles, each which hyperlinks to the full article within the book. However,
I would like to add the title and short summary of each story underneath each story title.

So here's what my book looks like right now:
First page:
Article 1title
Article 2 title
Article 3 title

Second page and on:
Full text Article 1
Full text Article 2, etc

I want the page to look like
Article 1 title
Tags
Summary
Article 2 title
Tags
Summary
Article 3 title
Tags
Summary

And I'd like to maintain that the article titles are hyperlinks to the full text in the book. I've been working on this all day looking at the manual, source code, this forum, etc, but haven't found anything. Is there a way to add tags and summary as subheadings in TOC? Or maybe I just create new pages in the book?