After being whisked away to a far planet, the Doctor has an insta-daughter made in about 2 seconds who is a fully grown woman that knows all about fighting.  Now the Doctor, Donna and Martha must try to solve the conflict between the humans and the fish people.  The Doctor saves the day with the insta-terraforming mechanism and everyone lays down arms, except the human leader who kills Jenny, the Doctor's daughter.  The Doctor tells him at gunpoint that he never would shoot him - although he has indeed done so many times in the past.  Later, the Doctor's daughter awakens from her death and takes a shuttle with no provisions or knowledge of the universe in order to travel the stars.