Summer Harrison has lost her father and believes she is the last werewolf in the world. Going through his papers, however, she discovers an old letter from Finland suggesting there's more to the story.
Taking the initiative, Summer travels to Finland. She meets Rikhard Linna, and the two are drawn together like magnets. Even though Rik confesses to still having feelings for his ex-boyfriend, Leevi Valo, their passion burns hot. But could one man alone satisfy a ravenous wolf like Summer?
During her journey through rural Finland, Summer discovers that uncovering the truth about her wolf heritage is fraught with peril. Abducted by a group of violent separatists and imprisoned in an old fort in the wilderness, Summer learns that it might have been safer for her to stay in England as the last werewolf.