She is the queen of a famous family, a guardian, and shoulders the heaviest mission in the world; he is a commoner, but he has persistent feelings as deep as the ocean. Their meeting may have been fate. But, can such an arrangement bring about a perfect ending? Can the regrets from the past life be undone in this life? Are they destined to stay together for life, or are they passing by helplessly? Will the repeated intervention of others become a barrier to their love?