Born as the daughter of a prominent noble family, Thalassa Zulimar had her life drawn out before her. Raised in her parents' loving embrace and her siblings' love, Thalassa grew up in a secluded small world. She would wed a nobleman of her family's choosing when the time came and dutifully fulfill her obligations. That was what she believed until everything came crashing down one day, leaving her in shambles. Alone and afraid in an unfamiliar world that was larger than hers, Thalassa found herself chased by shadows trying to kill her. It was at this perilous moment that she reached out in desperation for help when the voice of a demon responded to her call. Will Thalassa be able to survive and uncover the mysteries that shattered her world?