Fiona steps into the shoes of her identical twin, Fey, after she mysteriously disappears. A month earlier, Fey confides that her recently married husband, Alpha Cult, is concealing some information. That was the final communication Fiona had with her sister. With determination, Fiona embarks on a mission to locate Fey, even if it means impersonating her, assuming the role of Luna, the dominant leader's mate within the Sovereign Pack. Initially, she views him as a prime suspect. The idea of being attracted to him, despite the taboo, tempts her to defy the rules. However, Fiona is unaware of the true danger Alpha Cult poses, considering he possesses a unique heritage – he is part lion and part wolf, a rare creature believed to arise only once every thousand years.
