Crown Prince Lee Sun battles Pyunsoo hwe, an oppressive 18th-century Joseon group, helping civilians during water scarcity caused by privatization. Ga-eun aids him in overcoming obstacles to become a just ruler.

Set in the 18th-century Joseon, it tells the story of Crown Prince Lee Sun and his fight against a powerful and wealthy organization Pyunsoo hwe, who controls the country behind the scenes. He becomes a hope for the people who suffer from lack of water due to the greed of Pyunsoo hwe, who tried to privatize the nation's water supply. With the help of the woman he loves, Ga-eun, Lee Sun overcomes adversity and grow as a just ruler.—Anonymous

In the 1700's, Crown Prince Lee Sun (Yoo Seung-Ho) fights against Pyunsoo hwe. Pyunsoo hwe is an organization that has accumulated power and wealth through privatizing water all over Joseon. Crown Prince Lee Sun becomes a hope for the people who suffers. Ga-Eun is the woman Crown Prince Lee Sun loves and she helps grow as a ruler.—ghama