This is by H28 on onedirectionfanfiction.com it's wonderful and I hope you like it as much as me. Recommended for 17+
In an alternative universe where instead of fighting Lord Voldemort and winning the battle of Hogwarts Harry and his friends get kidnapped. What will happen when they are the only people fighting for hope? Everyone has their battle scars and Harry, Draco, Ginny and Hermione are learning to fight through them.