My dream team casting has come into fruition! I have always wanted to see Yoo Seung Ho and Kim So-Hyun as the main leads in a drama. I have watched them grow up from being child actors in dramas to the amazing young actors that they are today. Despite their age, they sometimes out-act older actors! In Ruler, Seung Ho plays a young crown prince who has lived life in anonymity due to the price on his life. The King, his father, had made a deal with a powerful group called the Pyunsoo in order to access the throne and have a peaceful rule. However, the price of such rule was to privatize the water system in Joseon and give them sole power over it. This deal was terrible to the commoners because the water would grow to outrageous prices during drought. Furthermore the corrupt Pyunsoo group decided to divert water wells as well which jacked up water prices even more till the point people were dying because of the lack of water. The group hoped to make the new crown prince a puppet as well. Thus,Crown Prince Lee lived most of his life under a mask to protect his identity. However whoever saw his face would be immediately killed. Once naïve young man, he soon discovers the state his people are in during a venture outside of the kingdom. He is heartbroken that his safety was the cause of such poverty and illness in the commoner’s lives. After accidently becoming involved in a brawl, a young Ga-Eun saves him. She is the daughter of a town official and is very interested in medicine. These two develop a tentative friendship, but without Ga-Eun knowing his true birthright. The Crown prince, knowing that the public did not know his face had ventured out without his mask on, masquerading as a messenger boy. Meanwhile, another young man who is also called Lee Sun, becomes acquainted with the Crown Prince. He is Ga-Eun’s friend and a peasant, but he is eager to learn and educate himself. After a terrible situation where both Lee Sun’s and Ga-Eun’s fathers are killed because of the Pyunsoo group, Crown Prince Lee Sun suffers a mental and heart breakdown. He is both angry and aggrieved that the king and him are so powerless against the Pyunsoo group. Therefore, he decides he wants to spy in Pyunsoo group with the peasant Lee Sun as masquerading as him, the Crown Prince in the palace. These three form a tight friendship, but with poor Ga-Eun not knowing the Crown Prince’s real identity. Furthermore, during this time, Hwa Goon, the Pyunsoo’s leader’s granddaughter, had fallen in love with the Crown Prince after he saved her life when she trespassed in the palace. While she is often terrifyingly manipulative, her soft spot for the Crown Prince puts her at odds with her grandfather.