Grace, the Luna of the Blackthorn Pack, discovers she is pregnant with Alpha Lukas's child. What should be a joyous occasion is overshadowed by Lukas's lingering feelings for his ex-girlfriend, Lilian. When Lukas drunkenly calls out for Lilian instead of Grace, it sows seeds of doubt in her mind. As Lilian reenters Lukas's life, Grace's marriage becomes increasingly strained. Lukas's ongoing flirtation with Lilian, even during Grace's pregnancy, leaves her feeling isolated and heartbroken. After a miscarriage, Grace decides to leave Lukas and start a new life overseas. However, Lukas is unwilling to let her go and tries to win her back. But by then, Grace has already lost faith in their relationship. Ultimately, Grace finds a renewed sense of self in her new career, while Lukas realizes too late that she was his destined partner.