Hayley Rose, also known as Agent 15, was a hidden gem amongst the Agents and scientists of SHIELD. She was a blur in the corridor, a myth to Field Agents and a well known legend to Scientists. Her stories were spread throughout the facility, everyone knowing of her missions that had claimed her the title of 'Agent 15'. No one has ever seen her though, everyone besides Nicholas J. Fury. When an urgent mission comes in that is under high class, Fury makes an important call. A trip to Budapest? A friendship forms between Agent 15 and two other Agents known as Agent Barton and Romanova. There's a reason the files are erased from the system, a reason Agent 15 goes into the shadows once more after the mission and a reason Barton and Romanova can't seem to remember just exactly what happened in that mission. She doesn't stay hidden for long though, not when the Winter Soldier resurfaces and her Agency is at threat.