The plot was that tony is missing presumed dead from a mission and steve is the one to tell peter. Peter was mad because they wouldn't let him go on the mission. Then it turns out Tony left peter videos in case he died. One was teaching Peter how to shave and I think another was how to tie a tie. The last one Peter watch was how to install Friday in his suit he ends up finding Tony in the dessert almost dead and Peter is pissed at steve still.
Please help! It might have been on Tumblr or AO3.