''Oh God,'' Olivia exclaimed, disorientated.
''Oh, my...'' Cassandra/Jimmy said, ''This is... different.''
''Cassandra...'' the Doctor said, glaring at her.
''Goodness me, I'm a man. Yum!'' Cassandra/Jimmy laughed, ''So many parts! And hardly used...''
''Get out of him, Cassandra,'' Olivia ordered.
''Hold on,'' Cassandra said, examining Jimmy's arms and torso, ''The boy was a twig the last time I saw him. Now he's... built. Macho even,'' she looked smugly at Olivia, ''You've thought so too. I've been inside your head...'' Olivia went bright red at Cassandra's implication, ''You've been looking... you like it.'' Olivia could only stare with her mouth wide open.
Suddenly, the infected humans burst through the door, ''We don't have time for this nonsense,'' the Doctor spat, pointing at a ladder and looking at Cassandra, ''Up, now!''
Cassandra/Jimmy looked unnerved but did as she was told, Olivia and the Doctor following.
''God, it was tedious inside your head,'' Cassandra/Jimmy taunted Olivia as they climbed, ''Hormone City!''
Olivia screamed as Matron Casp grabbed her foot, ''Get off me!'' she screamed.
''All our good work! All that healing!'' Casp snarled, ''The good name of the Sisterhood! You have destroyed everything!''
''Go and play with a ball of string!'' Jimmy/Cassandra jeered.
''Everywhere, disease!'' Casp raged, ''This is the Human World. Sickness!'' An infected human touched her, causing her to break out into boils. In her shock, she let go of both Olivia's foot and the ladder.
''Move!'' the Doctor ordered Cassandra/Jimmy as the infected humans continued to follow them up the shaft. They got to the top only to find the doors were sealed.
''Now what do we do?'' Cassandra/Jimmy questioned.
''Use the sonic!'' Olivia told the Doctor.
''I can't reach from here,'' the Doctor, who was below Cassandra/Jimmy said, ''Cassandra has to do it.'' He handed the screwdriver to her.
''How do you use this thing?'' Cassandra asked.
''Jimmy should know!'' Olivia said.
''It's such an obscure thought!'' Cassandra replied.
''Go into me!'' Olivia said. Cassandra did so.
''Ah, blondie again!'' Cassandra cheered, before looking up at Jimmy, ''Open it!''
''Get out of her!'' Jimmy ordered.
''You've got to open the door!'' Cassandra panicked.
''GET OUT!'' Jimmy ordered. Cassandra tried something new. She leapt into the Doctor.
''Oh, goodness me!'' Cassandra said, ''Another macho man! I'm having a field day!''
''Not into him!'' Jimmy shouted.
''Well, where else?'' Cassandra questioned.
''Think about it...'' Olivia said, pointing downwards.
''Oh, I am so gonna regret this...'' Cassandra muttered, before blasting her essence into one of the infected people, ''Oh, sweet Lord... I look disgusting.''
Jimmy got the doors open, and the three jumped through. The Doctor snatched the sonic and tried to seal Cassandra away, but she managed to blast her essence through and back into Olivia, who fell to the ground.
''Cassandra,'' the Doctor whispered threateningly, ''I'm beginning to find this tedious.''
''Inside her head... they're so alone...'' Cassandra/Olivia said, ''They keep reaching out, just to hold us... all their lives and they've never been touched.''
The Doctor and Jimmy walked on, Cassandra/Olivia following. The Doctor opened a door with the screwdriver, which led them onto Ward 26, where Frau Clovis charged at them with a chair.
''Stop there, you fool!'' the Doctor spat, showing her his hands, ''If we'd been touched, do you think we'd look like this?'' Frau dropped the chair sheepishly.
''There's nothing but silence from the other wards,'' Frau said, working on a handheld device, ''I think we're the only ones left. And I've been trying to override the quarantine. If I can trip a signal over to New New York, they can send a private executive squad.''
''Don't even think about it!'' the Doctor said, ''If they forced entry, they'd break quarantine. We are not to let a single particle of disease escape. Am I clear?''
''I am not dying in here!'' Frau protested.
''Turn. It. Off,'' the Doctor ordered.
''Not if it gets me out,'' Frau countered. The Doctor snatched the device from her and stomped it to the ground.
''Right, here's what we do,'' the Doctor began, ''Everybody get me intravenous solutions for every single disease. Move it!'' The Doctor attached a rope to himself, and Olivia/Cassandra attached the various serums to it. The Doctor got the lift open with the sonic screwdriver.
''The lift's ain't working,'' Jimmy said.
''Not moving. Different thing,'' the Doctor countered, leaping into the lift shaft and grabbing the rope at the center.
''What do you think you're doing?!'' Cassandra/Olivia asked as the Doctor fixed a wench onto the rope.
''I'm going down!'' the Doctor said.
''I'm coming with you, Jimmy told him, jumping on.
''Come on!'' the Doctor said to Cassandra/Olivia.
''Not in a million years!'' Cassandra/Olivia scoffed.
''If you're so desperate to stay alive... why don't you live a little?'' the Doctor countered. More infected humans burst through into the room. Cassandra/Olivia moaned and ran into the shaft, jumping onto Jimmy's back. She felt his formidable physique.
''I can why she likes you..'' she whispered into Jimmy's ear, making him go bright red.
''Going down!'' the Doctor announced. The wench sped down the shaft. The Doctor and Jimmy cheered while Cassandra/Olivia screamed.
''Well, that's one way to lose weight,'' Cassandra/Olivia muttered.
''Jimmy, when I say so, take hold of that lever,'' the Doctor ordered.
''There's still a quarantine down there, we can't-'' Cassandra began.
''Shut up Cassandra,'' the Doctor said, before pouring each serum into some kind if container, ''Now, that lever's going to resist. But keep it in position. Hold onto it with everything you've got.''
''What about you?'' Cassandra/Olivia asked. The Doctor ignored her and jumped through a trapdoor into the lift. He opened the door with the screwdriver to find the infected humans on the other side.
''I'm in here, come on!'' he called to them.
''Don't tell them!'' Cassandra/Olivia protested.
''SHUT UP!'' the Doctor ordered, before looking at the infected humans, ''Come and get me, come on! I'm in here, come on!''
''Commence stage one – disinfection,'' the tannoy announced. The lift began to pour the Doctor's cocktail into the lift, soaking him and also the infected who entered the lift. The Doctor watched as they became cured of their disease, and began to pass these cures to other infected.
''Pass it on!'' the Doctor cheered.
''What did they pass on?'' Jimmy asked as he and Cassandra/Olivia jumped down into the lift.
''Did you kill them? All of them?'' Cassandra/Olivia asked.
''No!'' the Doctor exclaimed, exasperated with her now,' 'I cured them!'' One woman came up to him and hugged him, making him look slightly uncomfortable as he hated physical contact, ''It's a new sub-species!'' he explained as the woman let go, ''A brand new form of life! New Humans!''
He smiled as the new humans observed their surroundings.
A short while later, the police had arrived.
''All staff will present themselves to the officers for immediate arrest,'' the tannoy announced, ''I repeat - immediate arrest. All new life forms will be catalogued and taken into care. All visitors to the hospital will be required to make a statement to the NNYPD.''
''The Face of Boe!'' the Doctor remembered, running over the Face, who looked much healthier, ''I thought you were dying?''
''There are better things to do today. Dying can wait,'' the Face replied.
''Oh, I hate telepathy,'' Cassandra/Olivia said, ''Just what I need, a head full of big face.''
''If I have to tell you to shut up one more time...'' the Doctor threatened.
''I have grown tired with the universe, Doctor, but you have taught me to look at it anew,'' the Face said.
''Is it true that you're millions of years old?'' the Doctor asked softly.
''That would be impossible,'' the Face joked.
''I got the impression... there was something you wanted to tell me...'' the Doctor said.
''A great secret,'' the Face realised, ''It can wait.''
''Must it?'' the Doctor asked.
''We shall meet again, Doctor, for the third time... for the last time... and the truth shall be told. Until that day...'' the Face said, before teleporting away.
''Right then,'' the Doctor said, turning to face Cassandra/Olivia, ''Time to get out.''
''But... everything's happy,'' she protested, ''Everything's fine... can't you just leave me?''
''No.''
''I don't want to die!'' she sobbed.
''I don't care,'' the Doctor replied.
''Mistress!'' Chip said, running into the room.
''A body,'' Cassandra realised, ''And not just that, a volunteer...''
''No, he's got his own life!'' the Doctor said.
''But I worship the mistress!'' Chip insisted, making Cassandra smile, ''I welcome her.''
Cassandra blasted her essence into Chip's body, making Olivia fall, only to be caught by Jimmy.
''You ok?'' he asked as he pulled her up.
''Y-yeah,'' she said, staring into Jimmy's eyes, and finally feeling Jimmy's physique for herself.
''Oh, sweet Lord. I'm a walking doodle,'' Cassandra/Chip said.
''Get out of him,'' the Doctor ordered, ''This has gone far enough.''
''Poor little Chip is only a half-life,'' Cassandra/Chip realised, ''And he's been through so much. His heart is racing so. He's failing. I don't think he's going to last-'' she collapsed to the ground, ''I'm dying. But that's fine. Everything's new on this planet. There's no place for Chip and me anymore. You're right, Doctor. It's time to die. And that's good.'' The Doctor nodded solemnly, ''But first, can you do one last thing for me?''
The Doctor stepped out of the TARDIS, followed by Jimmy, Olivia and Cassandra/Chip. It was the same party Olivia had seen in the projection.
''Thank you,'' Cassandra/Chip said to the Doctor.
''Just go,'' the Doctor said, nudging her onwards. The trio of time travellers watched as Cassandra/Chip told her past self she was beautiful, before Chip's body finally gave out, the younger Cassandra calling for help.
The time travellers stepped back into the TARDIS, the Doctor pausing for one last look.