The Beginning of the End

Life is normal in Lowersville until one day everyone starts choking and then they disappear like they never existed. 15 year old Annabeth is all alone. Well not totally alone. Two other 15 year old sophomores are with her. Andrew and his girlfriend and Annabeth's worst nightmare Missy. What will happen when these three kids have to survive an apocalypse and repopulate the earth? Will they survive or go down bringing human kind with them?