Dong-chang-saeng is a 2013 Korean-language Action Drama movie written by Kim Soo-young and directed by Park Hong-soo and produced by Park Eun-gyeong, Lee Deok-jae, Lee Seong-hun and Choe Ji-yun. He plays the teenage son of an ex-North Korean agent who is tasked to kill a North Korean assassin in South Korea in order to save his younger sister played by Kim Yoo-jung. Dong-chang-saeng stars Choi Seung-hyun, Seung-hyun Choi, Ye-ri Han, Je-mun Yun, Sung-ha Jo, Yoo-jeong Kim and Young-beom Jo. The music was composed by Noh Hyeong-woo. Cinematography was done by Kim Gi-tae and editing by Kim Sang-bum and Kim Jae-bum. The film has a running time of 113 minutes. It was released on 21st November 2013. The movie made a box office gross of $6 million. Distribution rights for the movie were acquired by Showbox/Mediaplex. He plays the teenage son of an ex-North Korean agent who is tasked to kill a North Korean assassin in South Korea in order to save his younger sister played by Kim Yoo-jung.