They're Alive?

James and Lily didn't die. They went to an adults gathering when Voldemort attacked. Dumbledore took Harry away from them after he defeated Voldemort and told the couple that their son perished with the Dark Lord. Harry was left with the Dursleys, knowing that his parents died in a car crash. What will happen when he gets his Hogwarts letter? Will fate try and reunite their family?