Five years ago, Kane, the Alpha, defeated Vampire Prince Vlad on the border battlefield, only to be cursed by him. Kane had to mate with a woman to survive. While he was unconscious, a mysterious woman saved him. After retiring, Kane hid his identity and became a security guard at Winter Group, all to find his savior.
Five years later, CEO Sophia Winter brings her daughter Emma into the building. Kane recognizes at a glance that Sophia may be the woman who saved him. Emma is nearly hit by a car driven by Sophia's younger brother Noah. Kane unleashes his Alpha power and saves her in an instant. Emma feels close to Kane and calls him "Daddy" on the spot.
Sophia is being pressured by her family to marry Julian Rose, the heir of the local Chamber of Commerce. Seeing Kane's strength and Emma's bond with him, she proposes a contract marriage. Kane agrees, also hoping to find his savior. When they get their marriage certificate, they run into Kane's ex-girlfriend Vera and her boyfriend Derek
