Forgotten Past- Descendants Of The Sun

Everything was perfect in the eyes of three childhood friends Shi jin, Mo yeon, and Dae young. They have now achieved their dreams that they have wished for since they were children. But their life took a turn when suddenly they were asked to train with people they were not familiar with. Unknown to two of them that there's a missing piece in their " perfect " life. And by following the higher ups orders their life might just become even more interesting than it does right now. Not even remembering how they ruined the life of their forgotten princess. The one who once cared for them the most.