Doctor Who Series 4 - The Doctor’s Daughter Trailer

The TARDIS is drawn to the planet Messaline, depositing the Doctor, Donna and Martha in the midst of a war between human colonists and the piscene Hath which has been waging for generations. Martha is kidnapped by the Hath, while the Doctor and Donna discover that the humans breed by accelerated progenation: recombining a single individual’s DNA to produce a new, adult person, ready for battle. Subjected to this process, the Doctor abruptly comes face to face with his daughter, Jenny, even as Donna begins to discover that there is more to the war on Messaline than meets the eye.