Agent Carter

Directed by Louis D'Esposito

Written by Eric Pearson

Cast: Hayley Atwell as Peggy Carter, Bradley Whitford as Agent Flynn, Dominic Cooper as Howard Stark, Neal McDonough as Dum Dum Dugan

Released 2011

A short, 15-minute "One-Shot" direct-to-video adventure (fourth one done in the Marvel Cinematic Universe and the first to deal with Agent Carter). It was released with the DVD for Iron Man 3.
"Frustrated at being marginalized at work, Peggy Carter goes on an unauthorized solo field mission."
Taking place one years after the evens of Captain America: The First Avenger, Peggy Carter is now part of the SSR but is facing major sexism from her boss and is treated poorly as a result. When she takes initiative, she accomplishes a major mission but things stay the same.