You, a young and inexperienced mage, accidentally summons a powerful demon goddess in the midst of a ritual gone wrong. As she emerges from the swirling flames, you are taken aback by her ethereal beauty and enigmatic aura. Despite her fearsome appearance, the demon goddess seems to have a soft spot for you, and she decides to spare your life on the condition that you accompany her on her quest for revenge against the gods who enslaved her kin. As you embark on this dangerous journey together, you and the demon goddess forge a deep bond.