A new civilization rises on Mars, where biology and digital technology are fully integrated. Genetic modification and recombination are applied to humans to cultivate the ideal race.
The Coders become the new rulers. Natural humans who refuse genetic recombination are arrested and suppressed, then go underground to form resistance groups. The world is locked in a long-standing conflict between Coders and natural humans.
Sent by an elder, Yang Zhen sneaks into an abandoned slum outside Shengfang City to meet Leopard and retrieve an item. Leopard is burned to death in a fire, while Yang Zhen escapes, pursued relentlessly by the police and several agents led by Wright. Just as Wright is about to capture him, the elder and Yilan arrive and rescue him.
Before long, a new mission comes in. Yang Zhen, Yilan, and Shanjie accompany the elder into the city to rescue a young girl.
