These are the events three weeks after Voldemort's defeat, the prequel to The Hogwarts Series that begins with "Aftermath".
Harry is free for the first time in his life; free to finally face his own sexuality; free to begin his life and find out who he is. But Draco Malfoy is also free; free from Azkaban but lost and alone in a Muggle world he barely understands.
Even though it's technically a prequel you'll be happier if you read the Hogwarts Series in order beginning with "Aftermath".