After breaking up with his girlfriend Rita, Mark begins to constantly have nightmares. He hardly sleeps and is terribly exhausted psychologically and physically. The man believes that the reason for this condition is paired “half-heart” implants, which give resonance to the physical sensations from a partner, which he and Rita installed for themselves as a couple. Everyone around claims that it is impossible to send nightmares through an implant, but Mark persistently blames his ex-girlfriend. Will he be able to understand the reason for his torment and heal his broken heart? The story will appeal to fans of social fiction and philosophical prose. It has a soundtrack - the song Nightmare by Existenter, written by rock musicians as a result of collaboration with the author of the story.