How did this start?

Eva summers is living in an underground bunker, hiding her entire life from the world above... why? The apocalypse. The dead roam the earth, wanting to consume every living thing. But Eva doesn't want her underground safety, she wants to be free! But can she leave the lives of those she loves, will her heart pull her up, or keep her down below?

Sorry I know that was a bad intro, I'm a new writer, and if you have a little time, maybe check this out and give me some comments, it would help me build up a bit, thank you, Lelo, out!