Former chief curtain wall inspector Shen Que was framed and disbarred, becoming a high-altitude window cleaner earning three hundred per day. When a typhoon strikes Linjiang, high-rise curtain walls explode one after another, and countless lives hang in the balance. Shen Que touches the curtain wall with his bare hands to predict fractures, but every time he acts, his tactile sense in both hands is permanently impaired. He must protect his daughter trapped in the high-rise and uncover the dust-covered truth of the glass accident from ten years ago. Testimonies can be altered and human hearts can lie, but only the cracks in the glass will not fake it. Breaking through layer upon layer of lies and obstacles, he uses his hands as the price to pursue the truth and protect the safety of thousands of ordinary people.