A male in his 50s is found dead in a redevelopment area. Based on the way how cruelly he was murdered, police strongly suspect that it must be a hatred crime committed by one of the victim's acquaintances. They arrest the victim's young Vietnamese wife Thien as a suspect. As she is young and not fluent in Korean, police assume she should confess easily. However, the suspect speaks in fluent Korean that she will exercise the right of silence.

In 2025, every single piece of information on you is gathered and that information is used to control you. Kim Jinseong, whose job is to follow people around and gather information on them, was ordered to watch Seong Suyeong, a nurse. To watch her closely, he entered the Special Needs Home as a janitor...