That's a very long story, but short version is: Holden Radcliffe made a fake world on a computer, which was called the Framework. Aida (a Life Model Decoy (LMD)), pretty much took it over and made it her own. It was a nasty place to be in. I never want to see another place (real or fake) where HYDRA won.
You can't believe everything that's been said on the news. I didn't shoot Talbot, a LMD did and all of the crazy stuff about SHIELD lately was because of LMDs/Radcliffe/Aida.