A lonely man with two hearts lost everything he had. He dwelt on the mistakes and guilt of his past lives, swallowed up by anguish and enveloped by darkness. Then suddenly, a small pinprick of light and love entered into the darkness of his life. That light grew from a pinprick, to a torch, to a sun. The light burned away the darkness and and the man returned to the world of the living. Then, the man had to change. He was still the same man, through time and space, always the same man, but he had a different face and personality. The light dimmed, scared by the change. The man reached for his light and it returned, brighter and stronger than before. This is the story of the love between the light and the man, the story of Rose Tyler and The Doctor.