Descendants of the Sun. I just finished re-watching this drama. There is a reason why this drama was such a huge hit when it was airing. The majority of kdramas are filmed as they air, but this drama bucked the trend by being entirely pre-filmed and produced before airing. Song Joong Ki plays Yoo Shi Jin, a military man and member of the special forces in the Korean army, and Song Hye Kyo plays Kang Mo Yeon, a high profile doctor. The chemistry between them is so wonderful they were dubbed the Song-Song Couple and they are the primary couple in this drama (which refreshingly lacks any real love triangles). Jin Goo is Seo Dae Yeong, a Sergeant under Yoo Shi Jin in the special forces unit, and his romantic partner is Kim Ji Won playing Yoon Myung Ju, a doctor in the Korean army. Both romantic couples have story lines that are touching, funny, heart warming, and heart wrenching. They both have their obstacles to overcome. This drama has an amazing mixture of humor (especially in the bromance between Yoo Shi Jin and Seo Dae Young) and drama. Fair warning, Episode 15 is the One With All The Crying. The supporting cast and sub-stories in this drama are as engaging as the main actors and stories and the writing is witty and fast paced. I highly recommend this for anyone who likes a good romance mixed with a little action and flavored with a touch of melodrama. It scratches a lot of itches. The story can veer off into the territory of 'Seriously?' on occasion, but it's completely forgivable.