Trailer:
Marvel's Captain America: The Winter Soldier

The Captain America discover the dark secrets of the espionage agency S.H.I.E.L.D.
The hero and agent Natasha Romanoff fight against those who lead this agency.
On the way to destroy S.H.I.E.L.D. friends are joining the captain 
The best friend of the Captain best friend when he was young is manipulated by S.H.I.E.L.D. This moves the hero.
The hero in spite of perseverance best friend to destroy refused to fight and finally saves his life.
Captain American is a big hero.

link:    https://www.youtube.com/watch?v=7SlILk2WMTI