The only daughter, princess which were born in the head family who unified "people of the forest". Passing the position as a leader by overcoming the decided trial, she was going to get married with Elle, her fiancee.

The trial is to spend about a month in a "purification ceremonie". Carry out a Princess with the trial during a purification ceremony. A man named "The Lord of the Room" appears before the Princess during the purification ceremony, Princess Purification ceremony is said doing voluntarily.

With understanding neither the contents of "purification ceremony" nor the method to return. Until the period of the trial ends, princess who can do nothing but live, with uneasiness inside, she reluctantly follow a man.