One day in 2023, the "Tearer Virus" swept across the world. Human beings turned into irrational walking zombies, attacking other uninfected humans and assimilating them into monsters called "Tearers". There were many crises around the world. China's Canghai City desperately resisted during this crisis. Reserve Cao Mengjie and his comrades took on the task of protecting Canghai City. In 2025, humans built a 200-meter-high steel wall around Canghai City to surround the city, and relied on the wall to fight the Rippers, but this wall was in danger of being defeated at any time. Diaosi Cao Mengjie, her crush Li Yanan, and high school playmate Li Yaohui and Chen Yifeng, with their youth and blood, faith and responsibility, drove a mechanical armor and launched an unyielding battle with the Ripper in this doomsday city.
This is the most massive doomsday defense battle in the world. This is also the most unforgettable and heartbreaking love story in the world. It is a romance novel and a fantasy novel, but now this is China, this is Canghai City, this is a siege, this is bleak loneliness and burning hope.