Wings To Fly

The world was devastated by nuclear war and radiation fallout, many strange mutations occurred, along with massive loss of life. Billions were killed, only a couple thousand people remained alive. Together, Avi, Scott, Mitch, Kirstin and Kevin survived the apocalypse. 
On her own, Sheralyn hides by day and travels by night, scavenging food and shelter where she can, she struggles to survive. She also protects her deepest secret. The radiation caused curious mutations in some people. Those people were made outcasts if they weren't killed. So when she discovered a strange change in her, she fled before anyone could find out. 
But one night, she comes across a band of people, the people of Pentatonix. Can they show her a better way to survive? Or will they all crash and burn?