Peter felt exposed as he rode by himself to the top of the building. His nerves jumped with every subtle rise in the soothing music, or even when nothing changed at all. His instincts shouted at him that these walls would close in any second, or conversely, that everything would fall out of existence around him and he would be floating in darkness.

A tragic situation turns worse (and dangerous) when Peter bolts from under the watchful eye of the Avengers to go after his aunt's killer. One-Shot. Spidey!Whump. Tony!Protectiveness. Avengers!Family.