After learning the truth about her true heritage Lily joins her real father to take down the real dark lord Dumbledore and destroy crime in both the wizarding and muggle world. Good Voldemort. Evil Dumbledore. Powerful Harry.
After falling off a carriage on the way to an event Harry is nearly killed by wolves and is recused and sent to a new home. 4 years later he gets a letter from Hogwarts and returns to the wizarding world. Harry's parents are alive. Wrong BWL.