In 2046, humanity begins to distrust and reduce its reliance on robots, and the newest line of machines, known as Seconds, becomes increasingly dangerous to the public. Detective Ross Sylibus, whose partner was killed by a robot, requests a transfer to Mars. Upon arrival, he is immediately drawn into a murder case when a country singer on his flight is killed. Stepping off the plane, he witnesses a tense scene and meets his new partner, Armitage, a tough female cop with a strong attitude. As more women are slain, the investigation deepens, revealing a hidden secret at the heart of the murders.