The T.A.R.D.I.S. settled in the library at the end of the day. The Doctor and Song went out and were welcomed by the hologram of River. She squeezed Song in her arms and kissed the Doctor a little destabilized by Song's resemblance so striking to Missy.

"You are ready to return with me? "

" Yes. The Doctor more needs me here. And then … I am not going to abandon you, you, my dear River. "

" Song, you are sure being able to do it?" Asked for the Doctor by looking at her.

" Yes. The gift of a cycle of regeneration is not complicated to circulate in my sense … And I have already had what I wanted. It was a short life but … Intense. You will thank Missy from me. "

" Don't worry, she will know it."

"Well then, let's go."
They approached the central heart of the library and cheated circuits to allow a new protection. River indicated the changes in the programs and the Doctor changed the parameters. Song sat on one imitation-chair, the look in the vagueness. When her position bothered her, she put her feet in the sky or turned to River and the Doctor. The ladder worried about her program.

"Do not pay it attention River. "

" I know sweetie but … She so looks like her. I hope that when she will be again included to the program, she will not be any more like that. "

" No … If I manage well, her saving will be the same as the one that she had before going out of the computer. "

" Then, it will be as if she had never lived her few days? "

" That's it. As before."
River was sad to know that Song would be deprived of her mortal's life, but if it was so that she would be her again and avoiding Missy's imperfections, she could only agree. Song observed them but was distracted by a noise in the corridor farther. She moved forward with a dance approach of her creator and recognized the noise: Missy's T.A.R.D.I.S.. She hid behind a row of book and observed the woman in purple going out, she seemed worried. She crossed corridors almost by running and found the Doctor and River. Song observed the scene by far and connected in the spirit of Missy to know what was happening. The tone rose between three protagonists.

" Doctor you are not going to delete her life and even not to return it to me! You cannot kill Song, you cannot do that to her!"
" We did this choice for what is best." Answered River.
" You the program shut up if you do not want I to disconnect you! Doctor come on, Doctor … "
" What that can it do to you, it's not as if you liked her."
She remained silent.
" Oh my God Missy don't tell me that... I do not believe in it, you became infatuated with Song? "
" You and I in a single body, how did not you want that it happens? "
Behind them, the lights went out.
" Vashtas neradas … Missy, we do not have time any more to wait, if I do not back up maintaining Song she will die. "
" But if you back up her you steal her her life."
" But I am her life! In your opinion what does mean Song? "
" Saving of Organized Nano Generation." whispered River.
Missy seemed lost while other lights went out.
" Where is she now? "
" She … Oh no, she was there few seconds ago. "
" Doctor! "
" Ah stop I try to concentrate! "
Song walked forward to join them pretending to have heard nothing.
" Song, it's going to be good. I am going to be able to protect you. "
" Missy … What are you doing here?" She asked turning away from the Doctor.
" I came you save you, can you believe that?"
" Song we don't have time anymore, sit you there" Told her River by showing the seat of connection.
The lights went out all at the same time. They found themselves in the darkest black ever. Song took out her screwdriver and lit the room of best which she could while the Doctor roared.
" No! Not now, The Library belongs to you but the programs have right to be there! "
" The Time Lords are not programs." Resounded a voice in the screwdriver.
" Theta … I believe that they caught me."
" No! "
River boosted the screwdriver of Song and the Doctor's, he managed then to create a red force field around them with the command. Missy was on the ground, one of her hands showed only bones. And her dress seemed empty. Only her face still presented signs of life. The Doctor leaned on Missy, dying, and embraced her.
" Missy please stay with me. "
" Doctor … It's too late." Murmured River.
" No! That's not it. I didn't wanted she to dies, just that she would be punished. Missy please, don't go, you are again going to steal a body and everything will be okay won't it? Won't it?!"
Missy looked at the Doctor in the eyes, smooth tears on each side.
" Says something nice …"
" No …"
" Please …"
Song knelt down near Missy and let the regenerative power of the Time Lords emanate from her. She held out her hands towards Missy and seized her nape of the neck. The Doctor looked at her and moved back all at once, River grabbed him by the arm.
" God Doctor …"
" Yes, she is going to do it. "

Song bent and kissed Missy for the last time, offering her at the same time her cycle of regeneration as had done River centuries and centuries previously. The limbs of Missy grew again and she found back all her life. The Doctor put his head on the back of Song and whispered to her ear.
" I shall always love you Song. I am proud of you. I am proud of the one that you were in your lifetime."
" I know Doctor. Be quick. "
Before that Song decomposed by losing all which made of her a physical being, the Doctor hung on to her the bough and activated the program. She sparkled, River fell out and the lights returned. Missy breathed and recovered.
" Where is she? "
" In the computer. She returned. "
" But why vashtas neradas is left? "
" It was her that they wanted. She had three regenerative strengths in her. "
He sat down on the floor and deactivated the field of force with command while sniffing. She looked at him.
" Are you OK? "
" Of course." He answered in avoiding carefully her look.
She moved closer to him and seen what he hid so badly. Tears. The Doctor cried. She knew that his modesty would prevent him from cracking in front of her then she pushed to the outter limits, dripped with herself behaving this way.
" Doctor, she died. She will not return. And all this, it is for ever. "
" That's enough!" He roared in getting up.
He pressed on the buttons of the command. He got excited more and more above until throw it violently to the ground and watch at it bouncing farther. Unceremoniously, he threw books scattered to the right to the left, there ripped some pages, threw all which passed him by the hand, he knocked down tables cursing these creatures, became more crazy still than this day when he had knocked his console until it sparkled, and he collapsed finally on an desk which had not moved, the head straight from the wood while his nails scratched the wooden table Missy got up and joined him to embrace him by putting a hand under his jacket but he pushed her away of the arm by inhaling, tears sliding loops now as a torrent. She tried again by putting a hand on his shoulder and by caressing his silver curls. He cried and took Missy's hand in his. They so stayed a long moment before recovering on the way towards their T.A.R.D.I.S.s. Missy opened the door of hers and played a little with the commands. The Doctor, waited in front of the blue box and caressed it before snapping his fingers to open it. The hologram of River appeared.
" Hello sweetie."
He turned hearing the familiar voice and looked at her slowly.
" River …"
She approached and hugged him. She caressed his face and moved back of a step.
" Ah Doctor why do you always this grumbling face?"
He looked down and tried to smile.
" Doctor, where do we go?" Asked for Missy always from the inside of her machine.
" You are going to do a little travelling in her company? "
" Is it what's waiting for me? "
River smiled by shaking her head.
" Spoilers. "
" Doctor?" Missy called.
" Somebody wanted to see you." Whispered River by holding the Doctor by the hand. Song materialized under the appearance of the Doctors and River, such as he was before materializing. The perfect mix of them both. Missy showed out at this moment.
" Doctor you could me answ… Who is it? "
" Missy, I present you Song. "
" Ah finally I meet you dear Master." Declared Song of a warm voice supported by a Scottish accent. Missy walked out and looked at the program closer, impressed by his beauty.
" How is it possible? " She asked inside by seizing the hands of Song staring at him.
" You are, my son, and always you will be for your mother and I."
" Doctor don't take a long time before coming to regenerate again, I want to live new adventures. "
The Doctor smiled by crushing a tear. River released his shoulder, kissed her husband and joined Song always in the hands of Missy. " Koschei? " Called slowly the Doctor by pulling her by shoulders. Song and River looked at them slowly with big smiles and dematerialized. The Doctor took Missy near his T.A.R.D.I.S. and kissed her from the edge of the lips.
" Then, where you do want to go naughty girl? ".