We are in 2116, the sleep of X1 is always disturbed by the same dream. His life and that of his clone, X2, take place in a quiet daily routine. They work in the same company, at the same workplace, together with many other people and their clones. Nobody can exist far from his clone. There are no feelings. Their life is constantly monitored. Until X1 decides to move away from its clone and perform an incredible action: to return in 2016 and change the course of the past to cancel the disappearance of emotions in man.

X2 discovers that his clone has disappeared. At home, through the computer that controls his life and that of his clone, he discovers that X1 has lately been restless and that he had received a video. Watching the video, he discovers the existence of the "Chosen One", a man who announces that he is the only one who can change the fate of all humanity. Meanwhile X1 plunged into the past, in the year 2016, tries to get in touch with his clone left in the future with the help of Alice, a tattoo artist, and communicating with his clone through a tattoo that is drawn on the skin, tattoo that appears simultaneously also on the arm of X2.

X1 and X2 are communicating 100 years of difference by writing each other tattoos that appear on the bodies. Alice, the tattoo artist who writes about her body in the year 2016, is skeptical of the man, who sees periodically appear in his shop skipping the line and asking her to tattoo him phrases without apparent sense on the body. His skepticism is extinguished when he sees a new tattoo appearing out of nowhere on the body of the X1. The scene moves to X2, which in the middle of the woods, the writing that its double is reading is being tattooed. He is forced to live on the margins of society to avoid being captured by government forces who don't allow anyone to live without his clone. At the end of the episode, in the middle of the woods, X2 meets the mysterious man who left him the video message.

X2 is in the middle of the woods, face to face with that mysterious man, who turns out to be another man without a double. He is confused, he does not know what to do and the man tells him that they have little time, but by joining their forces and their visions they can change the state of affairs. Meanwhile X1, in the year 2016, has unexpected help from Alice, the tattoo artist, who makes him remember some details that had seemed useless to him. And so he remembers his arrival in the past and the girl who read Seneca. And searching for that girl on the bank, she finds the boy with the ring on his finger. The same ring that is tattooed on its skin.

X1 and Alice follow the boy with the ring on his finger, to a laboratory where a strange device is kept. It could be the one that will serve for the triplication and the beginning of the revolution that led to the disappearance of emotions. X1 destroys the machine hoping, in making that gesture, to change the future forever and instead the faithful computer tells X2 that nothing seems to have changed. And so, in the present, X1 understands what has yet to be done. Only by feeling emotions will he be able to change the state of things, only by starting to try something for Alice can he change the future of man. That future in which, thanks to emotions, X2 is destined to no longer exist.