A child abandoned in a subway coin locker is sold to a callous and computing loan-shark and gangster boss dubbed"Mother" (Kim Hye-soo), that runs on a organ-harvesting ring in Incheon's Chinatown. Called Il-Young (Kim Go-Eun), the baby girl develops in to Mother's loyal right-handed enforcer and is groomed to function as eventual successor. However, when the loyalty to Mother of Il-Young wavers, the clash between your 2 ignites a merciless wave of strife and blood-soaked retribution.