"You think your friend is safe?" said the Consciousness, letting out a laugh.
"I think they'll be capable of looking after themselves," said the Doctor, scanning what could charitably be called a room. Rory had gotten free, but no one else had budged. Somehow she needed to break this illusion and get them free. There was always one option...
"Walt," she said urgently, running up to the two brothers and their fake mother. "Walt none of this is real."
"What did you mean?" said Walt. "My mother's here, I can touch her, she clearly exists."
"No she doesn't Walt... it's a fantasy, all of it is. That's the key. If there's one thing you know it's how to create fantasy. It's what you need to do right now. Expand your imagination right now."
"I don't-" began Walt.
"Imagine everything you've created," said the Doctor. "All those characters, all those stories, all those ideas. Imagine them. Bring them into your mind."
"A foolish effort, Doctor," said the Consciousness. "You'll never break the illusion."
"Oh I don't plan to break the illusion," said the Doctor. "I'm going to show you the critical mistake you made."
"Which is?"
"You underestimated just how powerful imagination is," said the Doctor, turning back to Walt Disney.
"Think about Mickey Mouse," said the Doctor. "Think about Goofy, Donald Duck, Snow White, Dumbo. Think about all those wonderful things you created. Remember those things and call them forth."
"Mickey..." said Walt Disney.
"Hiya boss," said a voice that brought joy to millions of children. Everyone turned to see Mickey Mouse standing there, beaming away. Before Mickey could speak more characters popped up, littering the area.
"The rest of you, think of those Disney memories that had an impact on you," said the Doctor. "Think of those classic moments you watched. Think about all the joy it brought to you. Embrace the magic of Disney."
Even more characters started to appear, as far as the eye could see. The history of Disney started to stretch back, appearing to fill the seemingly empty void. The Doctor smiled as the bright whiteness around them started to dim.
"What are you doing," snarled the Consciousness.
"You can't keep this many mental projections going on at once," said the Doctor. "You underestimated the power of Disney. It's taking a toll on your Baku, it can't keep up."
"Stop it," growled the Consciousness. "Stop it now."
"Oh no," said the Doctor. "You can't stop them. You wanted to give them their greatest desire, their happiest memories, and who wouldn't have fond times remembering Disney? If you want to keep this going, you're going to need to get them out of here."
The Consciousness glared at her, but relented. The Doctor was the real prize, the rest could go for now. In a flash everything disappeared, just leaving the Doctor, the Consciousness, and the Baku.
"Good try, Doctor," said the Conciousness. "But you're now trapped here with me. Soon I'll take control of your mind, and you'll be powerless to stop me."
"Think again," said the Doctor, pulling out a strange crystal thing. "You didn't really think I'd come here without an escape plan. Okay John," she continued, lifting the crystal high in the air. "Time to bring me home."
With that she threw the crystal onto the ground, shattering it, with the explosion blinding them all.