A Bittersweet Life

Sun-Woo (Lee Byung Hun) works very faithfully for years for a famous crime baron known as Kang (Kim Yeong-Chul), and has been ordered to look after the mistress, Hee-Soo (Shin Min-ah), to see if she is cheating on Kang. Sun-Woo is supposed to tell Kang immediately if she is doing so or else kill both parties. Sun-Woo catches her in the act but allows them to live if they promise to stop having their affair. The crime organization then brutalizes Sun-Woo for not having followed Kang’s orders. He then decides to get revenge and to try to confront Kang eventually.