South Korean film "Parasite" has seen breakthrough success for an international movie. It's a wickedly dark satire about class struggle in modern Seoul. And after winning top prize at last year's Cannes festival, it could now take home Oscars in six categories, a first for the country's film industry. Director Bong Joon-ho was astonished to hear the news. He's become the first Korean filmmaker in history nominated for the Best Director Oscar.