Five years ago, Adam—the president of a leading defense corporation—fell in love with an ordinary young woman named Grace. Keeping his prominent background a secret, Adam later suffered a severe brain injury and cognitive impairment following a car accident, which led to his disappearance. Grace rescued him, and for the next five years, she remained by his side, never once wavering in her devotion. On the day of their wedding, a ruthless man named Connor—the son of a powerful crime boss—arrived to forcibly abduct the bride. Witnessing Grace being humiliated, Adam suddenly regained his full senses. As his true identity as both a defense industry tycoon and the son of a crime syndicate leader came to light, he took swift vengeance against those who had wronged them. He then held a grand, belated wedding for Grace, dedicating the rest of his life to repaying her for the selfless, unwavering protection she had given him.