The first Korean trailer has gone online for Parasite, the new movie from director Bong Joon-ho. After a brief sojourn making English-language movies with Snowpiercer and Okja, Bong has returned to his native Korea for his latest film. The trailer is entirely in Korean, but The Playlist has these details on the plot: We already know that “Parasite” is a film about one family with “unique characteristics.” That’s all that’s really been said. A little bit of research about the plot would tell you that the story follows a young man and his unemployed family as …