After completing his mission, the father, a royal knight, returns home to the village where his only daughter, Marie, is waiting for him. The next day, he travels to the northern forest with Marie, where he finds an elf woman about to be attacked by some human men…! He manages to rescue the elf woman, but her true identity is Siena, the first princess of the neighboring Elven kingdom. What’s more, Siena’s younger sister has also been kidnapped by the same men. If things continue as they are, there may be a war between his country and the Elven kingdom. The father travels all over the kingdom to save Siena’s sister and avert the war…!!