They were flying along merrily when the Doctor realised something.
'We need to recharge,' he announced. 'We've got to land in Cardiff for a second. Just a pit stop.' Then he brightened. 'Why don't we go and have a chat with Jack? We can have a cup of tea at Torchwood. And some biscuits! I love biscuits, don't you? Especially chocolate ones...'
He was off, rambling on about biscuits and recipes and who-knew-what, pulling levers and flicking switches. Then there was a clunk as they landed and he threw on his coat, heading for the door, Donna not far behind.
They found the Torchwood headquarters within minutes and travelled down to see Jack and his friends.
'Doctor!' Jack shouted and wrapped the Doctor in a bear hug. Then he caught sight of Donna. 'Well, hello there. Captain J– '
'Jack!'
'I'm just saying hello!'
Donna smiled and shook Jack's hand, a faint blush colouring her cheeks. 'Don't be stupid, Doctor. I don't mind.'
They sat down to tea and biscuits (chocolate ones, to the Doctor's delight) prepared by Ianto and the five of them (The Doctor, Donna, Jack, Gwen and Ianto) were talking about past adventures and what Torchwood had been up to when there was a knock at the door.
'Sorry, I wasn't expecting you to come around,' Jack apologised. 'That'll be my girlfriend.'
Across from her, Ianto glowered into his tea and Donna struggled not to laugh.
'Hello!' called a familiar voice and a girl walked into the room. 'I'm...'
'Jenny!' choked the Doctor.
'Oh, know her do you?' asked Jack casually. 'Well...'
'Dad!' Jenny gasped.
Jack paled. 'You're the Doctor's daughter?!'
Jenny smiled. 'Yes, that's right, Jacky.'
'Jacky?!' the Doctor's face was purple and he looked close to having a spaz attack. 'Jack! You've been snogging my daughter? What am I saying, it's probably more than snogging!' The Doctor tried not to think about this and failed. 'Oh, God!' He turned red, then white, then purple and then he fainted.
They stared at his unconscious form for a few moments. Then Jenny looked up at Donna, Gwen and Ianto, Jack's arm around her shoulders.
'Well,' she said. 'I'd better not tell Dad the other news.'
'What news?' Donna, Jack, Gwen and Ianto asked simultaneously.
Jenny beamed. 'I'm pregnant!'
This time it was Jack's turn to faint.