Cast: Park Jeong-min, Im Seong-jae, Yeon Sang-ho, Shin Hyun Been, Han Ji-hyun, Kwon Hae-Hyo
Im Dong Hwan(Park Jeong-min), who never knew his mother's face, hears that there is a possibility that his mother may have been murdered. Im Dong Hwan begins to trace Jeong Yeong Hee(Shin Hyun Been)'s death with PD Kim Su Jin(Han Ji-hyun), who was filming a documentary about his father Im Yeong Gyu(Kwon Hae-hyo). They interview people who worked with Jeong Yeong Hee at a Cheonggyecheon clothing factory about 40 years ago.
