Song Joong Ki and Song Hye Kyo will make their return to the small screen in upcoming KBS's drama 'Descendants of the Sun'.

According to the production crew on April 2nd, aside from Song Joong Ki and Song Hye Kyo confirmed as the lead characters, Jin Goo and Kim Ji Won have also been casted for supporting roles in the dramas.

'Descendants of the Sun' written by Kim Eun Sook, is sci-fi fantasy drama telling the love story between an UN's peachkeeper and an army doctor. It's scheduled to go on air in the latter half of 2015.