http://www.amazon.com/Down-Out-Dystopian-Adventure-Undercity-ebook/dp/B019GIUN1C
Free on Amazon!
Undercity 109 MD (Meteor Devastation) Sealed off from the outside world, Teddy and his family survive by scrounging in tunnels for useful items to barter with the Upperlords (those who live above ground) for air, water, and food. But Undercity is crumbling and people are dying. Their only hope is to search the tunnels for a new place to live. Time is short as the Upperlords conspire to maintain control. Can Teddy find freedom? And how many people will he lose along the way?