"Stranger" revolves around the life of a seemingly ordinary man who finds himself entangled in a complex web of secrets and lies after a chance encounter with a mysterious stranger. The series begins with our protagonist, John, a successful businessman with a perfect family and a comfortable life, whose world is turned upside down when he meets a enigmatic figure who claims to have information from his past that he can't remember. As John delves deeper into the mystery, he uncovers clues that suggest his life has been a lie, leading him down a rabbit hole of dangerous revelations and unexpected alliances.