Kata kunci Protection

Satu-satunya koneksi mantan agen khusus Cha Tae Shik (Won Bin) yang kemudian jadi pemilik toko gadai adalah seorang gadis kecil, So Mi (Kim Sae Ron) yang tinggal di dekatnya. Sayangnya, ibu dari So Mi, Hyo Jeong (Kim Hyo Seo) menyelundupkan narkoba dari organisasi perdagangan narkoba. Hingga akhirnya, Oh Myung Gyu (Song Young Chang) yang barangnya dia curi berhasil menemukan Hyo Jeong. Di hadapan putrinya, Hyo Jeong disiksa dan dipaksa memberi tahu keberadaan kantung heroin itu. Hyo Jeong mengaku dia meletakkan heroin curiannya dalam sebuah tas kamera.

The suspense story begins when Jin Saeki, a policeman in Yamanashi Prefecture, arrives at a prominent estate residence in response to a tip, and finds the skeletal remains of 13 children, as well as a mysterious marking. Jūzō Haikawa, the long-missing owner of the estate, immediately becomes the prime suspect. Saeki collaborates with a woman named Kanon Hasumi, who has a connection to Haikawa, and together they search for the truth behind the case. In a parallel story set in Tokyo seven years after the case, a girl with a connection to the mark left on the Haikawa estate runs away from home.