"Theta!" Missy cried out, holding out her hand. The landscape around them fell away like sand; a hot, red smoke filled her lungs. She could see the twisted spires of the Lord President's parliament crack and crumble to the ground. The architecture, with its Gallifreyan engravings that used to bear the names of Time Lords long past, broke into pieces and flew through the darkened sky like meteors. The Doctor hung precariously off the side of a deep valley that had been formed in the chaos.
"Theta, take my hand!" Missy called again. "Don't be a stubborn bastard. You can't get out of here without me". A loud crash reverberated behind her, making her jump, as the glass protecting the capital shattered and nipped the ground as it reached it. Looking behind her, she saw women and children running from the fire now spreading through their houses. Distraught. Terrified. Smoke billowing. Filling their lungs with ash and dust. The rays of the sun hit their skin, which glowed with regeneration energy as it tried to heal. Missy noticed her own skin softly glinting orange, but ignored it.
The Doctor shuffled as the earth he clung to began to shift. "I have to jump", he shouted over the sounds of screaming. "Catch me".
"I will", Missy answered. "I promise". Pushing himself up with all of his strength, his feet clung to the soil and he jumped, reaching out. Hanging over the edge, Missy reached out too, closing her eyes. Fingers touching. Rough, callused skin. Heat. But then coldness. Air. Emptiness. She was afraid to open her eyes. She didn't want to see what she knew was out there. Taking a breath, her eyelids parted and immediately sadness glazed over her ice-blue eyes.

Theta was gone.

Her jaw gripped together as sadness turned quickly to anger. She could have saved him, she SHOULD have saved him. "Theta!" she yelled into the blackness below her. "I'll slice your damn head off if this is one of your tricks". Standing back, a wave of realisation washed over her. The Doctor wasn't the one to pull tricks, she was. She always was. Pulling her fingertips into a tight fist, her pointed nails drew blood from her palms, which dripped crimson blood onto the sand. Her best friend was gone. The one person who became close to understanding her was dead. She didn't hold back the tears when they came, and let them gloss her cheeks in thick lines.

"Don't cry, sweetheart", a voice said behind her, which made her spin around to see them. Their face was secluded in smoke and they wore a hood, but she could still tell who it was. A face from a time long past. And a past she had always wanted to forget.

"Why are you here? To taunt me?" Missy asked.

"I'm here to remind you", the figure replied. "This is who you are, Missy. This is where you are heading always. You will be the one to let the Doctor go, will be the one to promise everything but never give it".

"You're wrong. I've always tried".

"Of course you have. And he's never seen you. How many planets have you destroyed to get his attention? How many more will you destroy?"

"No more", she murmured.

"I'm sorry".

"I said no more", Missy shouted. "I will no longer stand against The Doctor". The figure smiled from beneath their hood.

"You are a child, Missy. Following blindly and waywardly. You can't last much longer on those ideals", the creature, which had become a silhouette against the orange smoke, walked towards her. "But I can help. I can bring you home".

"I am home".

"What, this crumbling mess around you? This is where they used and abused you, where they twisted you into madness, where -".

"Perhaps. But this is where I met The Doctor and I'd rather be no other place".

"Bollocks. Your home has been your TARDIS, owning the universe and taking anything and everything you want", the hooded silhouette was now face to face with her. "And I am proof of that". He tore the hood from his face to reveal that of The Master's. Missy gasped slightly. This couldn't be right. How could he be here? Why did he want her?

"Miss me?"

:/:
Missy shot upwards in her bed, a thin layer of sweat covering her face and shoulders. Time Lords didn't usually sleep, or at least less than the pointless humans that The Doctor seemed to love so much. But this was different. This was just plain exhaustion. An exhaustion she couldn't explain.
"Just a dream", she muttered to herself. "Just another horrible dream". It had been the same for the third day in a row, her not being able to catch The Doctor and letting him fall. Standing from the bed, she breathed slowly. She had teleported herself into  a hotel on the planet Loras, using a perception filter so that the hotel attendants didn't know that she was staying. "Can't go back to sleep", she murmured. "Can't see all that again". She took a silver canister from the dresser and poured a mug full of black coffee, glugging it down. The Doctor's little puppy, Clara, had gone. Ashildr had gone with her. Not even a goodbye for her mother. Who else did she have but The Master invading her dreams?

"Doctor?" she asked into the darkness. "Doctor, are you there?"