"Will you be quiet?!" Missy hissed back at Nardole and the Doctor, who were complaining as they trudged through the knee-high water that filled the cavern they were standing in.
The Doctor scowled at her, "We don't know if this is even the right place, for all we know this is just a random cave that we've happened on."
Just then Nardole shrieked, jerking backwards from something under the surface of the water that had just tried to take a bite out of him.
Missy just grinned, raising a delicate eyebrow as she looked to the Doctor victoriously, "Well there you go, the Rani always booby trapped her lairs."
Before the Doctor could bite off a retort, a tidal wave of water suddenly caught him behind the legs, sweeping him off his feet and straight into Missy, the two of them being carried along by the sudden influx of water.
Barely managing to keep their heads above the surface, they had no idea where they were being taken until they were suddenly deposited rather roughly onto a rocky floor, Nardole landing just beside them.
Pushing herself up onto her elbows, Missy looked down at the Doctor, who was grimacing at the pain in his ribs from where she had fallen on them, "See? Now do you still need more evidence?"
"Evidence of what?" Came a cold voice from above them.
Missy's eyes lit up excitedly as she bounced to her feet and gathered the other Time Lord in her arms, practically swinging the Rani round, who was looking more and more murderous by the second.
"Missy!" The Doctor hissed warningly, as he saw the Rani's hand twitch towards the gun on her hip.
Ignoring him completely, Missy just reached down and tossed the gun away, "Now, now Ushas, it's not nice to shoot your friends. Don't worry, I always forget that too, so I forgive you. But I don't want any nasty bullet holes in my nice coat."
Eyes widening, the Rani looked into Missy's eyes questioningly, before tentatively reaching out with her mind.
Koschei?
Missy's answering grin was answer enough, but just in case it wasn't clear, she took a step back and span in a circle before bowing dramatically, "In the flesh, I've regenerated a few times since I last saw you. Although it seems you have too."
Smoothing down the fabric of her jacket, the Rani smiled, her youthful looking face failing to reflect the long years of her life, red hair falling across her eyes as she glanced down at herself. "Three regenerations have come and gone since our last meeting." Then her eyes sharpened, "Why are you here? And who are your two pets?"
Glancing back slyly, Missy just laughed when the Doctor shook his head, "No way, I'm not going along with that." He told her, "It's me Rani." He told his old friend, reaching out to her telepathically to fill in the blanks.
"That one's his pet." Missy supplied as an afterthought, jerking her head towards Nardole.
"You're old Theta." The Rani sniffed irritably, looking between the two of them, "What world ending catastrophe has the two of you in the same room without an attempted murder?"
Missy gave a small shake of her head, along with a warning glance to the Doctor, "It's a long story, but I wanted my best friend back, and I was willing to make certain sacrifices to meet that end."
"And you're here…?" The Rani prompted, patience beginning to wear thin.
"Because you're our friend too." Missy told her genuinely, "We didn't know if you were alive or dead, and it mattered to us."
The Rani stiffened in surprise, staring openly at Missy, who didn't seem to care that the Rani was looking at her like she's just grown another head. "Who the hell are you and what have you done with the Master?"
"Stabbed him in the back, he wanted me to leave Theta for dead." Missy drawled, her Scottish accent leaping to the forefront as her eyes grew sharper, "I never believed myself to be the self-destructive type, but there you go."
Expression shifting to being reluctantly impressed, the Rani's lips quirked up into a small smile, "Only you would be crazy enough to kill a previous incarnation of yourself. I've missed you Koschei." The Rani told her honestly.
"Off course you have, I'd miss me too," Missy smirked, before slipping past the other Time Lord to head deeper into the caves, "Any giant mice I should be aware off?" She asked redundantly, seeing as how she didn't bother to wait for a reply.