The Upside Down Heart

Ana s and her friends live in a desolate future. Ancient diseases that were once frozen caused the death of many and changed the way humans live. All that is left is the people inside The Oasis, a place erected to keep the diseases out. Within The Oasis there is a conflict between those with complex genes (also known as possums) and those without (also known as simples). After discovering a troubling plot, in order to stand a fighting chance; Ana s and her friends must try to unite the people of The Oasis against the Leader, who's plan is to drive them apart.