An erotic film about a younger sister whose job and everything, including men, are being controlled, as her older sister said. A younger sister will do everything her older sister says, even if it is pretending to die. Everything, from her job to men and sex, is controlled by her sister. The older sister has already married and wanted to start a family, but she cannot have children. The troubled sister, who was worried, ordered her younger sister to have her surrogate her child. The younger sister, who has never refused her sister's demands, goes to bed with her brother-in-law.

Jeong-ho fights with Ye-rin. He happened to meet Eun-jeong, the wife of a senior who passed away. He tried to win Eun-jeong's heart, who was once his first love, but she has no intentions to date another man because of her husband. Instead, Ji-hye who lives with Eun-jeong falls in love with Jeong-ho. Ji-hye is trying to match loner Eun-jeong with the junior of his husband, Joon-hyeok, but is uncomfortable. Will Jeong-ho be able to love Eun-jeong?

Sisters Ji-soo and Ji-yeong decided to sell their used underwear due to financial difficulties. Perverted men offer to buy them at a higher price by asking these two sisters for shots of them wearing the underwear. Other men offer to pay even higher prices by demanding sex out of greater desire. As the sisters earn more money than expected, their service becomes more and more popular.

Jeong-hee was living with a man due to a de facto marriage. One day, her daughter, Dam-hoi, returned from her study abroad. Dam-hoi always wears leggings. The soon-to-be stepdad, Byeong-min, who is usually a fan of leggings, pays attention to her daughter's clothes. Jeong-hee noticed it, so she also started wearing leggings to distract her young prospective husband.