This drama will break your heart into little pieces. I feel so sorry for the OTP's love for each other. They were doomed not to end up with each other at the start. So this story goes, the Prince and Princess from different neighbor countries makes a marriage alliance to keep the peace between two countries. However, along the way, the main lead Prince killed the Princess's beloved grandfather. She lost her memories that contained her relationship with the Prince. So, she ended up going to the Prince's country for her marriage alliance. The Prince also lost his memory, as the Princess jumped into the river of oblivion, and the Prince followed after her. So, they both lost their memories of knowing each other. Throughout this whole ordeal-the Prince is trying to make his way to the throne. He loves the princess very much, but because he killed her people and wanted to take over her country---That didn't sit well with her. At the end, he ended up alone, sad and miserable. Overall, a very good drama!!!