In order to save the prince when he was seven years old, Su Tong was abducted by the enemy for eight years and became stupid after returning. In order to marry her, the prince even harmed himself and threatened all the officials, and promised to be her only family member, and she believed him for ten years. However, her family was ransacked and she begged the prince to take her to see her family but was refused. The tenderness and commitment that once existed were on the verge of collapse before the family tragedy. Su Tong struggled between his trust in the prince and his concern for his family. He gradually realized that the tenderness in the past may have hidden secrets that were not known to the public, and an exploration of love and betrayal began.