"So let me get this straight, the Doctor is in trouble and you need me to fly the TARDIS and save him from some terrible fate. Why do you need me, why can't you save him by yourself?" River looked at the tall red haired woman standing beside the console.

"This body is acting as a vessel for the TARDIS consciousness, me. While I know how to use the controls to fly myself, I lack the human instincts that may be required in a rescue mission of this sort."

"Why can't you use the human instincts of the woman who's mind you're inside of?" River stepped closer to Donna, looking over her impassive face trying to see something, not entirely sure what it was she was looking for, but something.

"I have had to completely suppress her mind with my own consciousness. If I were to try and access any part of her mind I would risk killing her. She cannot remember being here at risk of her own life. That is why I choose you."

River looked at this woman confused, "All right, she can't remember anything, but who is she?"

The TARDIS/Donna looked River in the eyes intently, "You don't know her yet, but you will one day."

"Spoilers, I see," River said with a smile as she approached the console and begin looking over the controls. "Why me though, I don t know how to fly the TARDIS..you. What made you think I was the right person for this job?"

"Because Melody, you are the only other person who could fully understand the complexities of my controls."

River stared at the woman aghast, "How do you know that name, he doesn't even know it yet, does he?"

"No, the Doctor has yet to find out who you truly are, but I exist at every point in time simultaneously. I knew who you were before you were born. Shall we begin your lessons?"