World of Sex: Mi So, who broke up with her boyfriend, goes down to the countryside to see her college senior, Myeong Hwa. Myeong Hwa, which was popular in college, are still popular with men, running a pension with the wealth inherited from their parents. Myeong Hwa is enjoying with two men, rich boyfriend Gye Yeong and the young Jae Sik. When a young and innocent smile appears, the two men are in favor of Mi So. Mi So first seduces Jae Sik, who is the same age...