Jang Pan-Seok (Heo Jun-Ho) is a mysterious figure. He secretly looks for missing people. He is the connection between Duon Village and the outside world. He becomes a fraud partner with Kim Wook and he solves cases.
Lee Jong-A (Ahn So-Hee) is Kim Wook’s supporter. She is a white hat hacker out to gain social justice. She works as a law-ranking public officer at a community center as her day job.
Shin Joon-Ho (Ha-Joon) is an elite detective. One month prior to his wedding with Choi Yeo-Na (Seo Eun-Su), his fiancé disappeared. To find her, he applies for the missing person squad.