The story happens after the final book, disregarding the epilogue in the end of the book. Voldemort is back.
This is the plot I use;
The second war against Voldemort and the Death Eaters has just been won, and life in the Wizarding World seems to be getting back to normal. The Ministry of Magic, under new leadership, has rebuilt itself and it's credibility. Hogwarts School has gone back to teaching it's own curriculum, independent from the Ministry of Magic. Nobody is afraid of going home to find the Dark Mark over their houses. Peace seems to have settled in.
At the Ministry of Magic, the secrets of the veil in the Death Chamber have been unlocked and many familiar faces have returned. Good, and bad. And while it was hoped that peace would flourish, reports of attacks on half-bloods and muggles began to pour into the Ministry of Magic. The new Head of the Auror Department, Sirius Black, worked tirelessly to quell the acts of violence before the problem worsened.
Rumours began to spread that the Death Eaters were reorganizing. In the midst of these rumour's, the Order of the Phoenix was reformed in order to protect the Magical Community. Despite all of this, life continued as though nothing was happening: until Hogwarts was attacked by the Death Eaters. Five students were killed, making this war horrifyingly real. Nowhere is safe.
Just as Hogwarts was beginning to recover from the tragedy, one of their own was killed by an unknown Death Eater. The Order of the Phoenix also learned that Voldemort had returned and was acting as the leader of the Death Eaters. Under his leadership, there have been many more attacks, including the most recent attack that led to the death of twenty-five students and professors. While Voldemort was captured, his Death Eaters managed to release him, and the war continues.
(plot borrowed from the awesome roleplaying site .com/)
There are a few important characters that I write in from the roleplaying site I'm on, they play an important part in my story.
1. Pesephone Silverton ; previous detheater, at some part in my story a part of the order and now a part of this other group called the cancios(or octavians, or I.I. meaning Isis industry's
2. Cencio/Octavian. A group of purebloods and one half-blood. They are assassins and do everything to protect their own.
3. Avalon Black. She is Sirius Black's wife. They have one son together called Aiden. She had previously lost a child named Regulus. Sirius Black has a daughter with his first wife that died (she uncovered the mystery about the veil in the ministry) his daughter's name is Lilliana.
That's about everything you need to know, just message me if you need to know more