Amelia Pond and the Doctor

A man that fell out of the sky as if he was an angel, a fallen angel. He carried a big blue box with him that appeared to be bigger on the inside then the outside. He's from a different planet, a different galaxy. But what happens when he can't return home? What if he no longer had one? He is now forced to make a living here on earth, he goes by the name John Smith and he applied to become a doctor. Possibly one of the best earth has ever seen. When all is going well what happens when one day he meets his new patient, Amelia Pond and his life is changing beyond repair. The real question is, is it changing for the better or for the worse?