On the day the seventh shelter was plundered by the Iron Curtain Army, Yun Ye's sister died inside the gate, and Lu Yao's communicator cut off with the last scream. Three years later, there was a legend among the refugees in the wasteland that there was a man who walked out of the tide of corpses. He had a rusty tactical saw in his left hand and the shelter's access card in his right hand. Behind him, there was always a mute huntress whose marksmanship was so accurate that it could break the poisonous mist in the wind. They don't speak, but they are more shocking than any declaration. No one knew why Yun Ye wanted to take back the shelter where the truth was buried, and no one dared to ask why Lu Yao always covered his neck with a scarf - there were the genetic lock marks of the seventh shelter.