When her latest human companion dies, the immortal Freydis meets an innovative and boundary-pushing scientist, but the deeper Freydis falls for him, the more difficult it becomes for her to hide the inhuman parts of herself. Then a fellow immortal introduces Freydis to his protégé, who vies for Freydis's affection and whose presence awakens a terrifying magic within her.

While Freydis struggles to reconcile her desperate desire to belong in the human realm with the dawning realization about who and what she is, there is an Otherworld threat to her and those she cares for. Should she risk everything to seek help from the scientist, despite the past of humans fearing what they don't understand, or embrace the otherworldly part of herself and risk shattering everything she thought was real?