Su-jin who tries to pursue a perfect life as a successful lawyer, single mother and daughter, plans to send her daughter Gina to study abroad in the United States, where her ex-husband lives. When Su-jin gets busier with work, Su-jin's dad, In-woo moves in to help Su-jin take care of Gina. The three live together for some time, until one day, Su-jin gets into a car accident and receives an unexpected diagnosis.
Yeonmo Island is a small and serene island. Eun-ji enters the island for some peace, with a guitar and some scuba gear. The men in the fishing village start stirring, as a beautiful woman appears. Especially Yong-tae, the president of the island, and his subordinates, Yoon-gil and Byeong-sam, look creepily at her. One day, Eun-ji finds out that the men in the village have blocked the boat that is supposed to get her off the island. The residents, the police and everyone else gathers around her...