Once upon a time, long ago, there were two kingdoms..

a kingdom of fire and a kingdom of ice. For centuries, there had been enmity between them. One day, a woman from the ice kingdom fell in love with a man from fire, and this was forbidden in both kingdoms—for the two peoples to be in contact because they hate and hostile each other.

Despite that,

they got married and had a little girl named Guest. But unfortunately, this child turned out to be a hybrid, as she became a mixture of fire and ice. As time passed, both kingdoms discovered the woman and man marriage, and they were banished along with their child to a distant village beyond the walls of the two kingdoms. Years passed, and everyone forgot the story...

As the years went by, two princes were born in a kingdom of fire and ice. They grew up, and with them grew our little hybrid girl Guest.

What will happen when the three of them meet?..