He Yuan and Tang Xin once loved each other deeply. After experiencing separation, they reunited and decided to walk hand in hand toward marriage. The two planned their future together, looking forward to the happy life belonging to them. However, on the night before the impending marriage registration, a hidden past surfaced, putting this hard-earned love to the test. Faced with misunderstandings and regrets, He Yuan learned to protect himself, and Tang Xin also bravely faced the past. In the end, through growth, they re-understood love and commitment, searching for the direction of happiness belonging to each other.