The One With The Patronus
Voldemort's been defeated. Death eaters like Lucius are in Azkaban, and Harry, Ron, Hermione and others have been invited back to Hogwarts to catch up on their lessons. Harry find Draco alone in the Forbidden Forest, trying to master a spell that he insists will bring him happiness. Harry decides to help him, and as time goes by, old grudges are forgotten and replaced with new feelings.