국정원 최고의 요원이었던 한지혁, 그가 기억을 잃은 채 살아 돌아왔다. 지혁은 자신을 나락으로 떨어트린 배신자를 찾기 위해 움직이기 시작한다.
Agent Han Ji Hyuk gets discovered on a fishing boat. The National Intelligence Service gets notified of his identity number, but his file is locked. When they realize he's their ace agent who went missing one year ago, they rush to get him. However, Ji Hyuk doesn't remember anything that happened, leaving many questions unanswered.
