The World That They Live In (Hangul: 그들이 사는 세상; RR: Geudeuli Saneun Sesang; also known as Worlds Within) is a 2008 South Korean television series that centers on the personal and professional lives of those in the broadcasting industry, offering a realistic look at Korean drama production through the work and romance of two TV directors, played by Song Hye-kyo and Hyun Bin.