Here is the third trailer for the new Marvel move Avengers: Age of Ultron. This is the best one so far.
We learn a bit more of what the plot is. It seems that Tony Stark tried to create some sort of thing to protect the Earth and an unplanned side effect of his efforts is an evil artificial intelligence. This seems to lead to Ultron and his desire to push humanity to extinction.
It also looks like Ultron teams up with Quicksilver and Scarlet Witch, the twins from Captain America: The Winter Solder’s credit scene.
Stark’s anger about his failures and Ultron’s desire for destruction seem to also be setting up a rift between Cap and Iron Man that looks to become full blown in Captain America: Civil War.
Of course ScarJo’s Black Widow looks to be as awesome as usual, and Hawkeye walks somewhere, or something.