Have you ever met someone who lit up your entire youth? Senior girl Tong Zhiliao (played by Zhou Yiran) has loved Taipei alumnus Gu Bin (played by Wu Nianxuan) for four years. She broke into his world, and he took her to feel the wantonness and passion of youth, which amazed her entire youth. As graduation approaches, will she choose to keep the secret in her youth or bravely say "I have always liked you"?