Sung-eun (Song Eun-chae), her friends Soo-yeon (Jeon Hye-bin) and Mi-sook (Park Seul-ki) likes boys until Sung-eun pursues after someone with more experience. She becomes attracted to new student teacher Kang Bong-goo (Lee Ji-hoon (entertainer)) and pursues Bong-goo. But what she doesn't realize about Bong-goo, is that he passes gas when aroused.