With a Jack cameo !

'Trust him to peel a fruit that looks like a banana and eat it' Donna told Jack, as they observed the Doctor slumped on the grass, leaning back onto a tall tree.

'He looks drunk' Jack responded, indeed the Doctor had drooped eyelids and a dopey grin on his face.

'Can you help me get him going?' Donna asked, Jack nodding. Together, Jack on one side and Donna on the other, they took the Doctor's arms and helped him up. He was still clutching the fruit in one hand as they set off.

'Wanna bite?' he offered Donna. Donna shook her head politely.

'Do you want a bite?' he asked Jack, turning to him .

'Not of your fruit' Jack said cheekily. Donna snorted.

'Do we live here?' asked the Doctor, noticing the jungle like surroundings.

'No, you live in the TARDIS' Jack responded.

'What's the TARDIS?" asked the Doctor.

'Its your spaceship' Donna told him.

'A spaceship?' enquired the Doctor, his eyes wide.

'Yes, a spaceship. We travel with you' Jack explained. He turned to Donna.

'LOOK OUT!' he warned suddenly, pressing a finger to his lips.

Donna looked around at their surroundings. Nothing seemed out of place, the only sound they could hear were various animals and a river flowing nearby.

'What is it?' she whispered. The Doctor pointed to a particularly large rock.

'There's a bear here' he whispered urgently. Donna could feel a smile playing on her lips and she heard a snort from Jack.

'There isn't a bear here' she reassured him.

'Yes there is, I can see it!' he responded. 'We need to hide!'

'Its okay Doctor, we're safe. Its not paying attention to you' Donna told him reassuringly. He turned to Jack

'Have we met?'

Jack winked at him.

'Captain Jack Harkness' he grinned.

'Not now Jack, he's having some kind of reaction' Donna said. Jack frowned as they reached the TARDIS. Fumbling with the lock, Donna managed to unlock the door.

'Awesome, I've always wanted to know what the Doctor would say if he saw the TARDIS for the first time' Jack said as they walked down the ramp.

The Doctors eyes lit up and his face was agape.

'Its bigger on the inside!' he exclaimed with glee.