
After the outbreak of post-viral sequelae, Sector Seven is placed under full lockdown. International student Shen Que and his roommate Jiang Ye evolve from terrified fugitives into determined survivors. After losing their companions, they meet Jiang Qixing, who masters the slingshot, and Felix, a train operator. Fighting their way out from a cult entrenched in a church, they escort a virologist to board an aircraft. Finally, they take control of Train FR3 and head east nonstop — twelve thousand kilometers across Eurasia, with their destination: the Dragon Nation.