*** City

So basically Echo is the main character. She has 2 friends because the world has needed due to zombies. They live behind a confined wall but when Echo and her boyfriend wants an adventure, she gets cough by Chris. He takes her to the guy's and they end up liking her and Chris wants to keep her and keep her safe but she has to go home. They fall in love and Chris helps them by letting them know the "bonies" are coming to get them.