Starts with an arranged marriage with a cold general. The female lead characters (FLC) were not favored children (General's Lady: FLC was a concubine's daughter while Sleepless Princess: FLC was the king's adoptive daughter). In both dramas, when the FLCs married over, the generals were suspicious of them. The problems that arise between the lead couples were similar too: misunderstandings, bickering, divorce, etc. Both shows also focuses on a investigation that has to do with a family member's death in a fire. When you are watching either, you can see the similarities between the dramas, but they have their own unique storylines.