Serena rescued the werewolf Kane from a fire, but her stepsister Valerie falsely claimed the credit for saving his life. Enduring immense hardship, Serena was forced into a substitute marriage with Sebastian, a billionaire magnate who had been in a coma for two years. Under her constant care, the comatose Sebastian regained consciousness and secretly protected her. Valerie and Kane continuously caused trouble, but Kane eventually realized the truth and was filled with deep remorse. Serena rejected Kane's repentance and chose Sebastian, who truly cared for her. Together, they overcame the crises. Sebastian dedicated everything to her, and Serena realized her self-worth, achieving a fulfilling marriage and family.