Lyra Aster has spent her entire life believing that love, desire, and fertility were sealed inside her for a reason. Her people told her that if she ever truly fell in love, the power within her could destroy an entire world. Then she escapes Veyra, crashes on Earth, and is found by Ronan Blackwood, Alpha of the Nightfall Pack. Lyra looks human. She has a heartbeat, warmth beneath her skin, and emotions she barely understands. But she has no scent. Ronan cannot explain what she is, yet the wolf inside him recognizes her instantly. Mate. As Ronan hides her within his territory, Lyra’s seals begin to fracture. For the first time, she feels jealousy, longing, and desire. But when the pack elders discover the truth, they declare her a dangerous alien weapon and order Ronan to kill his own fated mate. Instead, he gives up his power and chooses her. Soon, Lyra learns that she is not only a fugitive, but the last heir to Veyra’s fallen royal bloodline—and the key to awakening an ancient interstellar fleet. Worse, Ronan’s werewolf blood is tied to her people by a secret buried for thousands of years. To save Earth, Lyra returns to Veyra and severs their bond. Ronan follows her into the stars. Their connection may have begun with fate, but whether they truly belong together is a choice only they can make.