Min-goo is troubled seeing her two older sisters, Min-ji and Min-ah, go naked in their daily lives. After much deliberation, he devises a plan to have his friend Byeong-min come into the house. Min-goo proposes a family meeting. He lies to his sisters that he has no time to go because his father's business is not going well and declares that he will bring Byeong-min home. However, her older sister Min-ji is against it... Byeong-min, who entered the house, continues to be driven into a pervert...
| Actor | Role |
|---|---|
 Im Tae-mokByung-min (병민) | Byung-min (병민) |
 Lee Chae-damMin-ji (민지) | Min-ji (민지) |
 Ye RiMin-ah (민아) | Min-ah (민아) |
 Sun HoMin-goo (민구) | Min-goo (민구) |
 Kim Soo-jiHyun-sook (현숙) | Hyun-sook (현숙) |
 Ha JinBo-ra (보라) | Bo-ra (보라) |