The Weapon

In the darkest moments of the Time War, the Time Lords created a weapon. But when that weapon had its own conscience, it was locked away in the vault...until the Doctor. Kaira doesn't remember much of what had happened before she found herself on Earth, except that she had killed all the Time Lords.

Captain Jack Harkness comes across Kaira and recognizes her as a Time Lord from her binary hearts. He takes her in, wanting to protect her, and hopes that one day the Doctor might come by to find her.

But what happens when that day finally comes and Kaira wants nothing to do with him?