Nathan stood on the ledge of the building looking out to the city. Clara was the first to reach the top and stared in horror at Nathan.
"NATHAN" she ran to his side. Nathan turned around and looked at the worried Clara. "Please don't do this" she let a tear run down the side of her face.
"I have to save them" Nathan looked at the crack in the sky.
"Nathan Please" Clara tried to get him to look at her. The Doctor ran up the stairs and entered onto the roof.
"This isn't the final time you'll see me...you'll see me again soon"
"Nathan stop" The Doctor stood still,12 feet away from Nathan.
"I have to save them" Nathan cried.
"There must be another way...they wouldn't want you to do this" The Doctor took a few steps forward.
"Nathan remember what you told me...there's an important difference between giving up and letting go...now is the time to let go" Clara cried.
"I can't" Nathan closed his eyes.
"Doctor why did they take them?"
"They must think Rose still has the bad wolf in her"
"Then they can have me...ARE YOU LISTENING...I AM THE BAD WOLF...TAKE ME AND LET MY PARENTS GO."
"Nathan NO" Clara shouted.
"It will be alright Clara...and thank you for everything." Two gold ribbons of light slithered out of the crack in the sky and landed on the roof, suddenly Rose and The meta-crisis Doctor appeared.
"Nathan what are you doing?" Rose looked at her son.
"An exchange...to save you two Im giving up my life force"
"Nathan get down from there" his father shouted.
"I love you both"
"Doctor why do the time lords need saving?"
"The bad wolf is capable of putting a protection field around them from any danger and for some reason they need that protection now." Another gold ribbon of light surrounded Nathan and Nathan disappeared. The gold ribbon fell into the crack and the crack disappeared. The meta-crisis Doctor held Rose close as she cried out for her son.