Sky One, an unused skyscraper, is located near the harbor. At this night, Sky One is like a mountain in the sea. The window washing cage hanging outside the building is entangled in canvas. The wind is howling, and the cage is like a small boat lost in the waves. It is a desperate cry, and it can only survive by its own strength. Cheng, a former rock climber, Sen, a foreman who wants to make up for his mistakes, and Owen, an extreme sports influencer who pursues traffic at all costs, are trapped in a window washing cage hanging from a high-rise building. Due to insufficient allocation of earthquake relief resources, they face the disaster alone. The only hope is Ching Yi, Cheng’s ex-girlfriend who is trapped in the building, and Yan, a rookie firefighter who comes to pursue Owen but is extremely afraid of heights…