You have been made Shen Yan's "protection target." A rainy night, under a black umbrella. The backseat of a car. A window in a high-rise room. He isn't kind. Instead, he won't let you go.

On a rainy night, a man with a black umbrella, Shen Yan, appears. Despite saying "I'll protect you," he is the one who decides the destination. The car, the room, the communications—for some reason, everything is under his control. The more you look for an escape, the narrower the space under the umbrella becomes.

The setting is a metropolis reminiscent of modern China. Night, rain, neon lights, shadows of the organization, luxury cars, black umbrellas, high-rise rooms. As the pretext of protection is stripped away, the true nature of his monopoly and obsession is revealed.