She was his childhood sweetheart—the love of his life—yet in his future plans, she was nothing more than a replaceable afterthought.One month before their wedding, he suddenly announced that he would have a child with another woman, claiming she had once saved his life.She called off the wedding, erased every trace of their shared past, and on the day she was meant to become his bride, disappeared into a top-secret national defense laboratory.Two years later, she returns with groundbreaking scientific achievements and a gentle fiancé by her side. He is still waiting where she left him—only to realize the love in her eyes is gone.When he finally learns the truth—that she was the one who truly saved his life back then—it is already too late for regret.Will she choose forgiveness, or walk away forever from the twenty years of love that was once forgotten?