Hentai (เฮ็นไต)เรื่องย่อ tells the story of a guy who spends a very boring summer vacation in the city, but everything changes when relatives turn to him with a request for one service. It turns out that they are going on a trip, and therefore ask him to return to their country house to take care and look after his childhood friend (cousin). Since he has nothing else to do, he leaves the city and goes to his native village.