Fall in Love With the Brother-in-law: Eugene, who was not satisfied with her sex life with her husband, Sang-woo, became suspicious of Sang-woo's affair. I decided to get an introduction to a new agency from a close friend, I affirm that there is no way to get the 3 million won for a new agency. This is because Yujin doesn't have money because Sang-woo has the family's economy. Meanwhile, Minwoo, who was fired from his job for prolonged coronavirus, While spending freely at home, she feels lust for her sister-in-law, Yujin.