The Doctor looked around.

'This ship's Chula.' He murmured.

'Just like the med ship.' Jack agreed. 'Only this one is dangerous.'

'Just move.' Marion ordered.

It was then that the Doctor placed Marion's anger. Especially when Indy wrapped his arms around her, kissed her temple and told Jack,

'You heard the lady.'

It was the love of a mother. The Doctor had seen it countless times in his life. He quickly ran over what he knew of Indiana Jones. That's right. He had a bastard son born in 1938 and he married Marion Ravenwood in 1942. In 1943, they had a daughter…and it was 1941. It didn't take much to figure it out: their son had been made into a gas-mask zombie.

The Doctor snapped his fingers and a gold glow appeared around his hand, drawing the eyes of all the humans, except Jack. Dani glanced over, disinterested.

'Nanogenes?' she asked.

'Yeah.' The Doctor agreed. 'They activate when the bulkhead's sealed. Check you out for physical flaws and fix them up. I burned my hand on the console when we landed. All better now.'

He flicked his hand and they flew away.

'Nanogenes are Chula, yeah?' Dani asked. 'And if this ship is too…'

She trailed off. The Doctor understood anyway. He nodded, filing that away in his VAST brain for later. Indy and Marion moved to the back of the ship and Dani, Carlos and Sara moved to the front with Jack. Rose slipped closer to the Doctor.

'Why are they acting like that?' she murmured, gesturing to Indy and Marion who were now in their own little sphere. 'They're being really cruel to him. I know that he dropped it, but he made a mistake. Anyone could do that.'

The Doctor smiled gently at her. She was so…human. She saw justification wherever it was. He took her hand and sat her down. Taking a seat next to her, he explained,

'It's more than just the people to them, Rose.' He told her. 'Did you wonder why I looked at Dani that way when I saw them the first time?'

She nodded.

'Because that man is Indiana Jones.' He told her. 'In this day and age he's a prominent archaeologist. One of the best you lot ever produce. He had a son in 1938.'

'And his son's been infected?' Rose asked, figuring the rest out herself. 'Marion's the mother, then, yeah?'

Clever little ape. He thought affectionately.

'Yes.' He told her. 'The most powerful instinct good parents have is to protect their young. They're not really being cruel. It's just parental instincts.'

'You're talking like you've had kids.' Rose remarked.

'I've been a dad.' He told her.

'Yup.' Dani agreed quietly, coming over to them. 'Mr. So-Impressive here has fathered 13 kids, if you can refer to a loom as actual child-conception. He took care of his granddaughter because the Time Lords attacked her and they had to run away for one reason or another. He won't tell the reason, though. Then there was me. He found me on a barren rock when I was five, took me in and brought me up.'

'What's a loom?' Rose asked.

Dani twisted her lips to the side and then looked at the Doctor.

'How would you explain this to a 21st century human?' she asked him.

'You know how your lot are trying to grow babies in tubes?' the Doctor asked Rose. At her nod, he continued. 'A loom is a successful, more advanced form of that. It was how all of my people were born.'

'The reason for that is because, somehow or other, the entire Time Lord race were sexually sterilised.' Dani said.

'Yeah, still not rightly sure how that works.' The Doctor looked thoughtful.

Rose looked surprised to say the least. She looked at the Doctor.

'So your race was barren?' she asked. 'How come?'

'Because the three original Time Lords stopped the Cult of Pythia.' The Doctor answered. 'They then founded Time Lord Society and created the Looms. Well, the Other created the Looms.'

'The Other?' Rose asked.

'The Other was called such because no one could remember his name.' the Doctor explained. 'No one knows where he came from or what happened to him though.'

'No one except you.' Dani pointed out.

'What's that supposed to mean?' the Doctor asked.

'Well, I came up with this particular theory a little while ago.' Dani told him. 'When I spoke to Romana, she told me there was a rumour that the Other threw himself into the Loom of Lungbarrow. And you were born out of the Loom of Lungbarrow.'

'Ten million years later.' The Doctor pointed out.

'The Hand of Omega.' Dani cocked her head. 'It would only respond to the Other and yet it responded to you. Later that day, when you were explaining the Hand to Ace you initially said "we" instead of they "they" when you were talking about the original Time Lords. Not to mention Lady Peinforte's little threat. Am I right?'

The Doctor rubbed his jaw and grinned at her.

'What was the first thing that tipped you off?' he asked.

'When the Time Lords found out about me and you brought out the Hand of Omega.' Dani laughed. 'It wouldn't go with Rassilon and it wouldn't respond to him. And you grinned and said, "you better leave it with me". Then you told it to return to your TARDIS and it obeyed you.'

The Doctor chuckled.

'Yeah.' He agreed. 'That really got on Rassilon's nerves.'

'Who was Rassilon?' Rose asked.

'The only "survivor" of the three original Time Lords.' Dani answered. 'He was a huge pain, if you want my opinion on the matter.'

'We're here!' Jack called, interrupting whatever Rose was about to say.

They found Nancy. She was still a kid herself. Marion stayed near Indy. She wanted her son back and she somehow knew Dani and her old guardian would be able to do it. She remembered in the years previous. Colin Williams, who was stationed at Churchill's base, had been trying to "court her", as he put it, ever since her little Henry was born. She'd turned him down, though. She knew she would never be able to move on from Indiana Jones. And she knew he'd be back.

Dani, Carlos and Sara stood near her and Indy as the others came back. Then Jack got the Chula ship open. He stepped back and looked at the Doctor.

'See?' he said. 'Empty.'

'What did you expect in a Chula medical transporter?' the Doctor snapped. 'Bandages? Cough drops?'

He looked at his companion.

'Rose?'

'I don't know.' She told him.

The Doctor held up his hand.

'Yes, you do.' He said.

'Nanogenes!' Rose exclaimed.

Marion's blood went cold as she registered the significance. Indy's grip on her waist tightened as he arrived at the same conclusion. Carlos and Sara's eyes bugged and they looked at each other.

'Bloody…hell…' Dani muttered.

'It wasn't empty, Captain.' The Doctor said. 'There were enough nanogenes in there to rebuild a species.'

Then it struck Jack.

'Oh, God.' He murmured.

'Getting it now, are we?' the Doctor asked. 'When the ship crashed, the nanogenes escaped. Billions upon billions of them, ready to fix all the cuts and bruises in the whole world but what they find first is a dead child. Probably killed earlier that night. And wearing a gas mask.'

'And they brought him back to life!' Rose exclaimed. 'They can do that!'

'What's life?' the Doctor responded. 'A quirk of matter. Nature's way of keeping meat fresh. Nothing to a nanogene. One problem, though. These nanogenes aren't like the ones on your ship. These ones have never seen a human being before—don't know what a human being's supposed to look like—but they do their best. Then off they go; off they fly. Work to be done. Because now, you see, they think they know what humans should look like and it's time to fix all the rest. And they won't ever stop. They won't ever, ever stop. The entire human race is going to be torn down and rebuilt in the form of one terrified four-year-old, looking for his mother and nothing in the world can stop it!'

'I didn't know!' Jack defended himself.

Marion turned around in Indy's arms and buried her face in his chest as the tears came freely. She'd lost her son because of that careless 51st-century bastard. Indy held her and gently rocked her.

'Don't justify yourself!' Indy snapped at Jack.

Marion felt Dani pat her reassuringly on the back as she passed them. Marion turned her head and looked. Dani looked at the head of the ambulance and then moved over to crouch next to the Doctor.

'Emergency protocols.' She said. 'The gas-mask people are coming.'

'Why?' Rose asked.

'The ship thinks it's under attack.' The Doctor explained. 'It calling in the troops.'

'The gas mask people aren't troops.' Rose announced.

'They are now.' Dani disputed. 'This is a battlefield ambulance.'

'The nanogenes don't just fix you up.' The Doctor explained. 'They get you ready for the front line.'

'That's why the child's so strong.' Rose murmured. 'Why it could do that phoning thing.'

'A fully-equipped Chula warrior, yes. All that weapons tech in the hands of a hysterical four-year-old…' the Doctor murmured. '…looking for his mummy.'