Detective Gu Shen. His sister disappeared 10 years ago, Red Spider Lily left by murderer. New case: Bai Lu dead, Red Spider Lily in hand. Gu Shen finds Lin Weiwan, resembling his sister. He recognizes a button: "Are you my sister?" Lin Weiwan: "Ten years ago I was. Now I am the Red Spider Lily." Abducted, she became an agent; Bai Lu her contact. Siblings fight enemies. Gu Shen protects, Lin Weiwan kills. "Red Spider Lily means reunion." "You are back, case closed."
