Prologue.

A red haired woman lay on a hospital bed with her hand over her bulging tummy, a man with messy black hair sat on a seat next to the bed. There names were Lilly and James Potter, and they were a wizard and a witch. And they were expecting Lilly to give birth to twins soon.

The labour had caught them unexpectedly and Lilly was not fit for any form of teleportation, so they had to go to a muggle hospital. But they had received bad news from the doctor that was looking after them, the female twin had some problems and would need to be rushed to ICU as soon as she was born, it wasn't something serious but did need to be treated quickly.

When the time came for the birth the male twin came out first, who the parents named Harrison Potter, and was given to his mother . Then the female twin came out, who was named Matilda by the parents, before being quickly shown to the mother then taken away to be treated.

In another room Mr and Mrs Wormwood were waiting impatiently for the birth of their own daughter. They had also been given the news that their daughter was in critical condition and also needed to be rushed to ICU as soon as she was born, by chance the couple had also decided to call their child Matilda; actually they overheard the Potters say the name and said that that was their daughter's name since they hadn't given thought to one yet.

Once the baby was born she was quickly taken away to be taken care of.

In the ICW for babies the two Matilda's were placed near each other in incubators, the doctors weren't sure if either were going to survive.

Suddenly all time inside the room froze, the nurses who looked after the babies stopped mid-stride and the machines went silent. A woman in a pure-white cloak that covered all of her features came in from the shadows and walked over to the incubators holding the two Matilda's.

"I'm sorry I must do this children, but for destiny to run it's coarse this must happen." the woman said in a voice that sounded like it was the whispering wind.

The woman took the two girls and swapped them around.

She turned to the Wormwood's baby. "Either way your fate would have been the same, at least this way you will be mourned properly, be reborn again one day child and grow up strong." she said, then kissed the forehead of the baby and closed the lid of the incubator.

She then turned to the Potter's baby. "Please forgive me for residing you to this fate, but you will mould your future and save many by following it, if I had left you to your old one you would of died or lived a much harder existence than you will." the woman then kissed her on the forehead and closed the lid to the incubator.

The woman looked at both the babies with sad eyes, she walked back into the shadows while singing a lullaby and time resumed, no one the wiser about the switch that had taken place.

The next day the Wormwoods were given the delightful news that their daughter had pulled through. They looked slightly happy but otherwise didn't give any other sign that another parent in their place would do.

The Potters on the other hand, were given the dreadful news that their baby was not strong enough and was only being kept alive by life support. They knew no spell or potion would fix this so with heavy hearts they told the doctor to switch off the life support and let Matilda die peacefully. James suspected that the only reason that Lilly didn't break down completely was because she still had Harry to look after.

No body, save the woman and a few others, would know that the Potter's daughter still lived and that it was the Wormwood's daughter who died until seven years later.

And that's the prologue. Yes, it made me very sad to include baby death:(

There's no point asking me who the woman or who the other people who knew about the switch were or how they knew to mess with the babies' fate because that's for later on in the story.

Also, there are some questions that I want peoples' opinions on before I properly start the story on the first page.