Almost nothing Rina remembers about her life is true. Rather than the ordinary librarian she believes herself to be, she's actually a sorceress who fled from another world to ours when creatures from an alien dimension devastated her home and killed her family. Now they've pursued her to our world, summoned by a sorcerer who plans to open a portal and invite monstrous entities from the void between dimensions to overrun this planet. Rina's former bodyguard, a cat shapeshifter who was once her lover and still yearns for her, helps her true memories to awaken. She must come to terms with the truth about her past so that together they can save their new home from the fate of their old one.