Worlds Within ( Air Date 2008-10-27 ) Genre Drama, Romance category. Overview "Song Hye Gyo plays a PD Joo Joon Young who has bold and unstoppable personality. Hyun Bin also plays a promising drama PD Jung Ji Oh. This drama focuses on TV stations by portraying the love and struggle of these 2 PDs during filming their respective projects as well as unfolding male and female staffs' love stories and marriages.".