Cut to the end of "The Stolen Earth"
The Doctor's time is running short. He looks at his hand as a familiar glow passes through it.
"Here we go. Good luck, Doctor!" shouts Captain Jack as he gently pulls the other companions away. The doctor looks at Jack, the man who had been searching and waiting for him for so many years. Always fighting in his name, never doubting his beliefs.
"Will someone please tell me what is going on?" yells Donna. Wonderful, brilliant Donna. He never got around to explaining regeneration to her. There were so many things he never told her about himself or his past or his people. And now she'd experience a time lord's death without any warning or preparation.
Rose responds "When he's dying, his er, his body, it repairs itself. It changes. But you can't!". Oh Rose… There is so much he wants to say, how much he missed her, how she was always on his mind, how happy he is to see her and how sorry he is for their time being cut short for a second time.
The Doctor's breathing quickens as his body starts glowing brighter and brighter.
"It's too late. I'm regenerating. I'm sorry Rose."
The pale golden energy shoots out of the Doctor ricocheting off the Tardis console room as The Doctor's Companions take cover.
Rose lies down on the floor near the Tardis doors. As the regeneration energy collides and sparks against the walls around her, she focuses her attention at the man in the centre of the petrified inferno. To her relief, his face hasn't changed yet but is tightened in pain and fear. He opens his eyes and catches Rose's mournful gaze. He looks away almost ashamed that this is happening. That he didn't work harder to reach rose, that he didn't have more time to spend with his friends.
The Energy became more erratic, twitching and darting in random directions with every shallow breath The Doctor takes. He resigns himself to his fate, silently pleading in desperation for a second chance or a mad plan or just a little more time. Then somehow through the icy roar in his ears he hears…bubbling? The light must have accidently hit his severed hand… his hand. His hand!
It's risky and there is no guarantee this plan would work, but he has to at least try. The process is about to make him vanish him forever, there was no time to lose. With all his remaining strength, The Doctor reaches out with one arm and all the energy is redirected into his spare hand. To his relief the plan is working! "I wasn't too late." The Doctor thinks as the light slows down and dims to a soft blonde glow.
He stands up straight and looks at his awestruck companions.
"Now then. Where were we?"