'Cos you see now they think they know what people should look like and it's time to fix all the rest. A German bomb falls on it, destroys it forever. And he hugs Jamie, laughing. And he throws the nanogenes away from him, towards the gasmask people who are still milling around on the train track. But she's not, is she? CRASH SITE ENCLOSURE (INSIDE THE WIRE)
They go back to the bomb site, and the Doctor and Jack uncover the Chula med-ship, which has a tarpaulin over it, hiding it from view. Even the TARDIS phone. For the thinking. HALLWAY
Suddenly, a child wearing a gas-mask jumps out in front of her, and she screams and stumbles backwards - but then the little boy takes the mask off. He summons the nanogenes. It's all my fault. JACK (calling up): Yeah, just like that medical transporter. JACK (to the Doctor): It's empty. JACK: There it is. Jamie. NANCY: It is. NANCY: Jamie. NANCY: Thought as much. Nanogenes. Perfect. ROSE: That's so lame. Rose and the Doctor look at each other. Safely as you can? She is caught. That's where he was killed. The Doctor and Rose rush over, the Doctor staring down at the child, hardly daring to hope. The Doctor is paying them no attention, eyes fixed on the sobbing Nancy. The mother. The other children are all crowded inside with him. This lot have never seen a human being before. Where is this going to go?
Plan: A: Jack; Q: Who sent the metal object through the time vortex? A: German; Q: What nationality is the bomb? A: a perfectly safe and "empty" old medical transport; Q: What does Jack claim the metal object is? A: the Doctor; Q: Who is suspicious of the metal object? A: the site; Q: Where is the transport held? A: wounds; Q: What did the nanogenes attempt to heal? A: all humans; Q: Who did the nanogenes think should have gas masks? A: Nancy's DNA; Q: What did the nanogenes identify as Jamie's mother? A: Jamie's transformation; Q: What is the name of the child? A: Rose; Q: Who is the Doctor's companion? A: the TARDIS; Q: What does the Doctor invite Jack onto? Summary: Jack explains that he sent the metal object through the time vortex to attract "Time Agents" to this time period, where he would have them pay for the object, but before they could receive it, a German bomb would fall on it. Jack claims that it is a perfectly safe and "empty" old medical transport, but the Doctor is suspicious. At the site where the transport is held, the Doctor realises that it once contained nanogenes that are able to heal wounds, and deduces that the nanogenes attempted to heal Jamie, but thought that all humans should have similar injuries and gas masks. Nancy claims it is all her fault as she is actually Jamie's mother, which she admits in front of the child. As they hug, the nanogenes identify Nancy's DNA as being his mother's and reverse Jamie's transformation so that they resemble each other; the rest is done to all the others who had been converted. Jack captures the bomb that would have fallen on the site and the Doctor and Rose rescue him before it explodes, inviting him on the TARDIS.