in it, no one knows that tony is iron man, as he publicly left stark industries to stane after afghanistan (i think after realising stane ordered the kidnapping/is selling weapons under the table/etc.) and destroys stark industry property as iron man in his free time (and i think he is also working to expose stane). iron man is declared a villain by SHIELD, and nat, clint, and a somewhat recently defrosted cap regularly battle with him.
tony started working as a teacher after his “retirement”, and pepper came with him and also works in the same school. (i think) SHIELD decides steve needs some time in “normal” life outside the SHIELD barracks, so he’s also given a job as a teacher (under a false name), alongside nat and clint (coulson works as the principal) at said school.
“the gang” eventually becomes friends (i think steve’s backstory is that he’s amish, hence why his knowledge of the modern world is very limited) and tony and steve start to date.
the whole thing is filled with identity porn and was a very fun read, and if someone knows which fic i’m talking about, i’d really appreciate it if you’d let me know!