The Five (2013)

Eun-A (Kim Sun-A) lost her family at the hands of a serial killer. She is now mentally and physically destroyed. Eun-A then decides to get revenge. She enlists the help of four people marginalized by society including a North Korean defector, ex-gang member and a person heavily in debt. All four persons need organ transplants. Eun-A's plan is then set in motion.