Five years ago, Wren Connolly was shot three times in the chest. After 178 minutes, she returned as Reboot: stronger, faster, with the ability to heal, and less emotional. The longer Reboot is dead, the less humanity remains in him after his return. Ren 178 is the most dangerous of the Reboots in the Republic of Texas. What Ren enjoys most in her job is training new Reboots, but one of the new recruits is the worst she has ever seen. At 22, Callum Reyes is almost human. His reflexes are slower than others, he always asks questions and his ever-present smile infuriates Ren. But still it seems to her that there is something special about him. When Callum refuses to follow the rules, Wren is given one last chance to put him in his place or she will have to end him for good. Ren has never disobeyed orders before because she knows that if she fails a mission, she will die along with this guy. At the same time, she had never felt as alive as she did with Callum. The ideal soldier was tired of following orders.