This drama is entertaining.

I love the queen who would do everything to protect her remaining four sons, the Grand Princes, and her deceased Crown Prince's family following the death of her eldest son, the Crown Prince.

The main protaganist, the Queen, who was happily married to her king, never bothered her four sons so the boys were let to do their own things which affected their studies. When her eldest son fell ill, she sought out help from the previous deposed Queen who was deposed from her position following the death of her eldest son. She also learnt from the deposed Queen that the latter's remaining three sons were murdered by the killer.

From that moment onwards, the current Queen decided to train her sons to be eligible for the position of the Crown Prince in order to safeguard her family.