The love story between a soldier and a doctor reaches new heights, as their bond strenghtens to a point where it becomes unbreakable. However, as they push ahead through life's treacherous journey together, they realise that there's much that they still don't know about each other. Si Jin bears an untold secret-a secret so dark and dangerous that it could potentially put Mo Yeon into harm's way.
The hardest thing in a relationship so filled with the threat of never-ending dangers is acceptance. In the middle of their journey as a couple before eventually becoming one, each side has to accept the most brutal truth, and the most difficult changes no one can withstand. Understanding is not enough. Only through acceptance and acknowledgement of what's ahead of them can prepare them for the uncertain future ahead.
However, would it be easy for them, especially when a wanted terrorist is after their blood?