It was 1260.

This land was isolated by women and women only. A pandemic broke out two centuries ago and eliminated men (surprisingly), there was a time of instability due to famine and extreme poverty until Kang Minah rose to the power where she restored women's lives and brought the land back to stability. 

There was a river. They called it the River of Life. Women who wanted to conceive would have to seek permission from Empress Kang to drink from the river in order to maintain the population.

Women fell in love with each other for their beauty and grace. They looked after each other and cared for each other like a man and a women would do. They raised their children together in a complete family.

It was 1460. 

Women had long forgotten men existed and history book did not record the pandemic outbreak. A new heiress in the Kang was born and the entire nation celebrated the news for she was born in the night where the moon was full and bright. People called her the Lucky Star because they believed that girls who were born under the full moon were auspicious. She was the third daughter of the Empress Kang Soo Yeon and Queen Kim Tae Yeon. She was made the crown princess.

Her name was Kang Seulgi.