Sister-in-Law's Sensation Filming Locations

Newlywed couple A-yeong and Kwang-soo is at the edge of a cliff. After five months of opening a small restaurant in his brother's cabin, Kwang-soo, who struggles to attract customers, even works part-time at a parking lot to pay back the rent to his brother Kwang-choon. After hearing about this, Kwang-choon tells Kwang-soo that he will waive the cabin rent until his business becomes stable. Kwang-choon's kindness has a hidden objective: he has his eyes on his younger brother's young and pretty wife, A-yeong, for a while. Kwang-choon takes advantage of A-yeong's suffering and hardships in life and demands to have a physical relationship with her. In order for A-yeong to protect her marriage with her husband, she allows herself to have sex with Kwang-choon. During the day, she's a sex slave to his brother-in-law, and by night, she's a quiet hostess in their restaurant. While A-yeong walks a dangerous path between her husband and his brother-in-law's bedroom, Kwang-choon's wife Hyo-seong, who is suspicious of her husband's affair, is astonished when she finds out that his lover is his younger sister-in-law, and decides to have her revenge. Will the two women be able to escape the tangled web of their relationships and find true happiness?