Worlds Within[2] (Korean: 그들이 사는 세상; RR: Geudeuli Saneun Sesang; lit.

The World That They Live In) is a 2008 South Korean television series starring Song Hye-kyo and Hyun Bin.

It 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.

[4][5] Jung Ji-oh (Hyun Bin) and Joo Joon-young (Song Hye-kyo) are two people with vastly different backgrounds.

They were lovers back in their college days, but later had a complicated break-up due to their separate relationships with other people.