Building Avalon - Blurb - Help

I would like some feedback on a blurb I've written.

For my themed project at uni, I've drawn a prologue thingy for a story I'm working on, [as seen here] and I need to have a little blurb for it >.>; It's really tricky to write a good one when you only have a vague idea of it's plot *laughs nervously*
So here it is:

Building Avalon

The world pivots on the brink of two possible futures.
One leads to a point of no return and the total collapse of society,
And the other, leads to a better and brighter world far stronger than the last.

Pockets of hope spring up far from the dark, polluting city states, slowly regenerating the natural world, but threats are always lurking at the horizon.
Young Efa cares passionately about the environment and her homeland, Afallon, and it’s up to her and team to defend the fragile progress from the relentless attack from the cities.

But as the attacks continue, Efa must make a difficult chance, which will decide which route the world will follow.

So any advice and help would be really helpful :) Thank you :D

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