Nicholas Blazer, a retired American agent who worked in the darkest shadows of the government, is part of an elite "invisible" team that quietly takes away some of the world's worst villains. Nicholas lost his memory after he was blamed for causing several members of the team to be exposed and assassinated. After being dismissed, he lived a simple life in a small town, but his home also had a perfect security system. One day, Nicholas's former colleague Elyas Kane came to him and asked Nicholas to help him get his daughter back. He returned helplessly to this dangerous world, and along the way, the secret of losing everything was gradually solved.