The Doctor is a Time Lord: a 900 year old alien with 2 hearts, part of a gifted civilization who mastered time travel. The Doctor saves planets for a living—more of a hobby actually, and the Doctor's very, very good at it.

Jonathan Dakers' early ambition was to become a great surgeon and to marry Edie Martyn. But, on the death of his father, he is obliged to start work as a partner in a poor general practice in the Black Country. Edie falls in love with Jonathan's brother, Harold, who is killed in the Great War, and Jonathan marries her as planned. It is only afterwards that he realises he now loves another.