Moon-young is a mute girl, and always has a small camcorder in her hands to secretly film people's faces. Moon-young could not stand her father's drunken rant and ran out of the house. There she meets Hee-soo breaking up with her boyfriend with tears. They gradually get related to each other.

HA Yoon-ju becomes the newest member to a unit within the Korean Police Forces Special Crime Department that specializes in surveillance activities on high profile criminals. She teams up with HWANG Sang-Jun, the veteran leader of the unit, and tries to track down James who is the cold-hearted leader of an armed criminal organization.