A pleasantly refreshing, exhilarating, comical sex erotic parody movie!　　&#39Choon&#39 the heroine with wacky and girly sensibility, lives with her best friend Ga-hee in her boyfriend&#39s house, and is absorbed by three generations which struggles but eventually loses its goal. &#39Choon&#39 who couldn&#39t shake off her worries about the future, happens to hide in a mansion by chance and plans a meticulous operation with her best friend Ga-hee and boyfriend to be a perfect parasite, but the story of three people who don&#39t know the upcoming storm and their huge price to pay awaits.