Deep Trap (2015)

Jun Sik and So Yeon have been married for five years, but have been afraid to make love ever since being scarred by a miscarriage. When Jun Sik comes home late on the day of their wedding anniversary, So Yeon begs him to make love to her again. After his refusal, she pushes him to go on a mind-healing trip to an island. They settle on a shabby and humble restaurant where the seemingly nice and welcoming owner, Sung Chul, gives her a bad vibe. Sung Chul warmly offer them disgusting food and gets chummy with Jun Sik by plying him with booze. The next day, another couple come to the restaurant and are brutally murdered during the night by Sung Chul for no reason. Having witnessed the crime scene, they try to escape from the restaurant but get stuck in an irrevocable quagmire. Will they be able to get away from the murderous restaurant and its owner?