The story will begin with the introduction of the protagonist of the story. A girl named Rosella who resides in the land of humans. A place where humans are strictly prohibited. She enters the enchanted city of sapphire. Being a human she is captured and brought to the head of the kingdom; Helga Martino. She upon her satisfaction that Rosella is a human spares her life and keeps her as her maid.

Within a short span of time she becomes the favorite maid of Helga and earns her trust. She also learns about the past of Helga.