Once upon a time a poor girl lived spending all her forces aiding her blind father. Beautiful and kind, she gave around her beautiful smile. Unfortunately, the disaster broke in her life. She decided to sacrifice herself to the Sea Lord in response to a promise. One cloudy day, she threw herself into the depths of the sea, praying to the god of the sea to save her father...

The impossible happens in 15th century Korea.
A princess who was disguised as her dead twin brother by her mother became king. Once her true gender is found out, the female king is sentenced to death by drinking a lethal dose of poison.
This story details the events of that forgotten king's life.
(Source: MU)