Missing pieces

AU after the snap where Tony Stark doesn't die, Peter doesn't have the iron spider yet, and I decided to leave out Morgan and Pepper for story purposes, I don't own any characters I simply created the story and a certain person named Meagan.

It's been a few months after the snap and things are going well for Spiderman, school ended just a few days ago, there hasn't been much criminal activity and he's able to kick back a little. Until Ultron appears again while he is at a park with his friend Meagan, her house starts smoking and she runs inside to find her mother only for Peter to reach her too late and the house explodes. Ultron steps out of the rubble and damage is dealt, a few miles away, Tony is infiltrating a Hydra base with Cap when they find a mysterious figure running through the empty halls. After that single attack Ultron disappears, and is seemingly gone, but is he though?