The Doctor stayed in the TARDIS, aiming to avoid parents' evening. Aderyn had tried to explain the concept to him, but he just hadn't understood. They never had anything like parents' evening on Gallifrey and the whole idea was completely alien to him. When he had asked Aderyn whether her adopted parents had attended her parents' evening, he felt a pang of guilt as she had looked away from him and mutter something about how they had always been too busy to attend. He mentally kicked himself and remembered that they hadn't cared. So it was likely that they hadn't been busy, they just couldn't be bothered to go.

So he stayed in the TARDIS, avoiding people and constantly tinkering with the contraption that he and Aderyn had been building. There was still much to do.

He hadn't really been paying attention to anything in particular when the scanner started to beep. He launched himself at the TARDIS console and stared at the screen.

"No, no, no." He breathed. He grabbed the contraption and headed for the TARDIS door.
_

Aderyn had no experience of parents' evening. But she got into the swing of it fairly quickly. As the parents sat down they immediately attacked her with questions in regards to their child's progress. Most of the children she taught were pleasant and fairly competent. It wasn't until she came across Courtney Wood's parents that she felt a small glimmer of sympathy for Clara. She didn't know how Clara could put up with them every year.

Aderyn looked at Courtney's parents and sighed. She crossed her hands neatly on the table in front of her and met their gaze. "Unfortunately, Courtney is rather a disruptive influence. I have had to remind her several times that manners exist and she does keep coming up with the most ridiculous excuses to try and get out of class. She needs to pay more attention. A lot more attention."

Courtney's mum nodded along as Aderyn spoke. When Aderyn finished she looked at her hopefully "But has there been any improvement in her behaviour or work?"

Aderyn looked through the stack of class work in front of her. She had been provided with Courtney's class work for the entire year, including the bits she missed at the beginning, and her behaviour reports. She looked up at the Woods when something at the door caught her attention. It was the Doctor. He was waving his hand at her, wanting her to follow. She looked around he hall at the other teachers, each with parents sat in front of them. The only other ones who had noticed the frantic Doctor was Clara and Danny. Clara looked over and her. Aderyn jerked her head towards the door. Aderyn stood up. "Mr and Mrs Woods, I'm afraid something has come up and I must depart. Judging by the information giver, Courtney has improved very slightly. But she still has a long way to go." She darted round the tab;e and reached the door the same time as Clara.

"There was no chance tonight was going to go smoothly, was there?." Clara muttered.

"None whatsoever." Aderyn said.

"Already?" Aderyn groaned, seeing the Doctor fully prepared for Blitzer combat.

"Yes," The Doctor said quickly. "We need to move now." They all started down the corridor when Danny ran up behind them.

"Is it back already? What are we going to do?"

Aderyn looked from the Doctor, who seemed to have chosen to ignore Danny completely, to Danny. "We're going to stop it." she said quickly "You're going to go back to parents' evening."

But Danny still followed. They ran out of the building and stopped in the small courtyard.

"It'll scan the area. If it gets to parents' evening, it'll kill them all." The Doctor said.

"We've got to evacuate." Danny said quickly.

"PE, shut up." The Doctor snapped. He took his sonic screwdriver from his pocket and handed it to Clara "Get back to the hall. Give it some squirts of helicon energy, setting number forty one. No more than three seconds each, random pulses. Distract it, then you lead it away from the hall, give me two minutes."

"Then what?" Clara took the sonic screwdriver with trembling hand.

"Then go straight to the TARDIS. Aderyn, you're with me. There's a few minor things on this machine that need sorting quickly." The Doctor said. Aderyn nodded. Clara nodded at them both then ran back into the school.

"You're using Clara like a decoy?" Danny snapped.

"Not like a decoy, as a decoy." Aderyn said.

"Is there anything I can do?" Danny called after Aderyn ad the Doctor as they began to jog away from him.

The Doctor turned and walked back to Danny. "Yes. And this is very, very important." The Doctor said "Leave us alone!"
_

Clara found the Blitzer in one of the school halls. She let it know she was there. When it turned and began to charge towards her, she fled. It followed her down a corridor, across the playground and didn't even stop as Clara slammed the storeroom door behind her. It destroyed the door completely.

The Doctor and Aderyn were already into the storeroom. Aderyn was frantically pressing buttons on the backpack mounted device the Doctor was wearing. He held an old fashioned microphone in his hand.

"Hurry up." Clara hissed as the Blitzer entered the room.

"Yes, I know." Aderyn muttered. her button pressing became faster and her eyes more focused.

"Any time now." The Doctor said.

"I'm trying to condense twenty four hours work into seconds, there isn't exactly a manual for this." Aderyn snapped. She then stepped back suddenly "You're green."

As soon as those two words had left Aderyn's mouth, the Doctor raised the microphone.

"Stop! Skovox Blitzer!" The Doctor said. The Skovox Blitzer stopped in it's tracks.

"Awaiting orders." The Blitzer said.

"Superior Skovox Artificer. Analyse stop analyse stop." The Doctor continued.

"Superior recognised. Pattern one one oh, Orders orders." The Blitzer replied.

"Why's it listening to him?" Clara whispered.

"It listening to it's superior." Aderyn said "It thinks the Doctor is it's general."

"Initiate input. Commence shutdown protocol. No conflict. Conclusion?"

The Blitzer waited for a few seconds before responding "Problem solution."

"Conclusion." The Doctor repeated.

"Final input code missing. Emergency terminate. Initiate self-destruct in nine eight..."

Aderyn slapped her forehead and rushed forward to the backpack "We forgot the final input code." she began frantically typing at a keyboard attached to the device.

"Quickly." The Doctor said as the Blitzer's eyes turned from a pale blue glow to a burning red.

"Seven six five..."

"I need time." Aderyn shouted "Distract it Clara."

"Me? What can I do?" Clara asked.

"Anything." The Doctor said.

"Three two one."

"OI! Skovox, over here." The Doctor and Clara looked up at the door to see Danny stood in the doorway. He ran forwards and leapt over the Blitzer. It turned to face him.

"Under attack." The Blitzer said, pointing it's weapons at Danny.

"Go." Aderyn said quickly, stepping back form the Doctor and pulling Clara behind a shelving unit, out of direct sight of the Blitzer.

"Artificer Artificer. Stop. Confirm stop override final input code." The Doctor shouted into the microphone.

"Code accepted. Abort self-destruct. Orders accepted Stop stop stop." The Blitzer shut itself down. Aderyn breathed a sigh of relief and walked back over to the Doctor. Clara ran from behind the shelves and hugged Danny. Aderyn and the Doctor looked at each other and smiled.

Danny prized Clara's arms from around his neck and looked over at the Doctor "You okay?"

The Doctor put a hand on Aderyn's shoulder and nodded "Okay.

"Just okay?" Clara asked.

Danny smiled " It's all right, it doesn't matter. I don't need him to like me. It doesn't matter if he likes me or hates me, I just need to do exactly one thing for you. Doctor, am I right?"

The Doctor nodded.

Clara frowned, looking from the Doctor to Danny "What? What thing?"

"I need to be good enough for you. That's why he's angry. Just in case I'm not. " Danny explained.

Clara put her hands in her pockets and smiled broadly at the Doctor "He did just save the world."

The Doctor shrugged off the heavy backpack "It's a good start." He muttered.

Danny looked over at Aderyn. Aderyn appeared to be paying very little attention to the conversation. She was busy typing on her phone.

"What about you?" Danny asked.

Aderyn looked up "Sorry, I wasn't listening."

"I said, how about you? Are you okay?"

Aderyn looked back down at her phone as it beeped pleasantly "Never better." She muttered with a smile. She then took a pen from her pocket and seized the Doctor's hand. "These two days that I'm writing down," she said as she scribbled on the Doctor's hand "Don't bother me on these two days. Even if it's an emergency."

As she released his hand he looked down at the two dates she had neatly written "Why?"

"I had plans, Doctor, that I had to rearrange. Now I have and I don't intend to rearrange them again."

The Doctor shrugged "Fine." He picked up the back pack and walked into the TARDIS.

"Clara said you were married," Danny said lightly "If he's this bad with the boyfriend of his friend I dread to think what he was like with your husband."

"Wife, actually. And the day we both me her, she died." Aderyn said sadly.

"What?"

"I had a wife. Not a husband." Aderyn said.

"No. I meant the part about her dying the day you met her." Danny frowned.

Aderyn crossed her arms and grinned "That part is extremely complicated and it takes a lot of time and several flow charts to explain."

By the time Danny and Clara saw fit to drag themselves out of the storeroom, parent's evening was long over. Aderyn leant against the TARDIS as she watched the door close behind them.

"He did just save her life. You could at least appreciate that." She called into the console room.

"It doesn't mean I have to like him." The Doctor called.

Aderyn smiled and walked into the TARDIS "Not at all. I mean, Clara is a good travelling companion for you but I still don't like her."

The Doctor walked around the console to where Aderyn was stood. He looked seriously at her "You could try."

Aderyn's smile vanished "No, I really couldn't." she said and pulled a lever. The TARDIS engine whirred and the time rotor began it's steady rise and fall.