Real Sex Experience

During her school break, Ji-woo visits her older sister Seo-woo’s house, bringing along her boyfriend, Jin-gyoo. Jeong-woo, who lives with his girlfriend Seo-woo, believes that Jin-gyoo is not worthy of Ji-woo. Meanwhile, Seo-woo finds herself attracted to her sister’s boyfriend. A tangled web of love between the two sisters begins to unfold.