In order to deal with this problem, cell signal jammer came into being and became an important "guardian of silence" in life.

With the rapid advancement of science and technology, this tactic has not only potentially changed the face of war, but also raised a series of ethical and legal issues.

Deep in a hidden valley, there is an inconspicuous cabin. The owner of the cabin is John Harrison, a former special forces member who has carried out secret missions. After retiring, John wanted to live a quiet life, but his past career destined him to be unable to completely isolate himse