Watch Ruler: Master of the Mask drama online English subbed.
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.