After the apocalypse’s gray fog swallows the world, army medic Shen Jin loses her voice, while mercenary Qi Xiao becomes obsessed with making her speak. She says nothing, yet saves the entire camp with her eyes; he fights his way through with gunfire, determined to win back the voice that was stolen from her. Radio host Lin Yuan hides sound waves capable of awakening humanity’s memories. A Du, a young boy, secretly records her breathing while she sits in silence. Every pill made by pharmacist Mo Ran contains poison. And Old Zhong, after spending a whole year repairing a radio, finally hears it make a sound one night: her crying.