Corrupted City AU (Doomyboy)

Disclaimer
This AU is based loosely on the game Sunset Overdrive. Some of the backstory is taken directly from the game and there will be mild spoilers for the game. If you intend on playing the game, stop reading.

Backstory
It's the Awesomepacolypse! Recently, Diamond Industries released a new energy drink called Overcharge solely in beautiful Beach City. Unfortunately, The drink had an unexpected side effect on the gems and humans who drank it...by which I mean it turned them into massive, corrupted monsters. Now Diamond Industries are attempting to cover it up and have cut off Beach City, and the Survivors, from the rest of the world. The city's only hope is a group of Survivors with Style, the Crystal Gems!...and Steven.